We are happy to introduce Acronis Backup 12.5 – the most secure backup solution on the market, capable of protecting 20+ platforms no matter the size or location – on-premises, in remote systems, in private and public clouds, and on mobile devices. It ensures business uptime by spinning up backup on a virtual machine or by restoring an entire system to new, dissimilar hardware, overcoming compatibility issues. Acronis Backup provides flexible storage options: NAS, SAN, tapes, disks, Acronis Cloud, or any private or public cloud, such as Azure, AWS, or Google. Its proprietary AI- and ML-based technology features proactively prevent cyber attacks, stop questionable behavior, and automatically recover damaged files. Its intuitive, web-based management console provides full oversight on the backup management tasks and monitoring in 25 languages.
Acronis Backup 12.5 is available in two editions: Acronis Backup 12.5 Standard and Acronis Backup 12.5 Advanced.
What's new in Update 4
Backup
The enhanced backup option Performance and backup window (former Performance) enables you to set one of three levels of backup performance (high, low, prohibited) for every hour within a week. The high and low levels are configurable in terms of the process priority and output speed.
The Physical Data Shipping backup option for cloud backups
Recovery
The capability to save system information on a local disk or a network share if a recovery with reboot fails.
Scalability
The maximum number of physical machines that can be registered on a management server increased from 4000 to 8000.
Security
The capability to disable anonymous registration so that a user name and password of a management server administrator are always required when registering a device.
All communication during a device registration is done via HTTPS. It works out of the box and cannot be disabled. It is possible to enforce certificate verification during unattended installation in Windows and in Linux.
Mass registration of devices by using a token instead of a user name and password
The capability to install Agent for Linux in UEFI systems with enabled Secure Boot.
During the installation, the Acronis key is generated, used to sign the snapapi module, and registered as a Machine Owner Key (MOK). Once the installation is completed, the user should restart the system and enroll the key by using the password provided by the setup program.
Applications
Support for Microsoft Exchange Server 2019
CBT (tracking file changes at a block level) can be disabled for backups of SQL and Exchange databases.
Active Protection
New protection options:
Detection of cryptomining malware
The capability to allow certain processes to modify backup files while self-protection is on
Protection of network folders mapped as local drives
Virtualization
Conversion to the following virtual machine types:
VMware Workstation
VHDX virtual disks (for connection to a Hyper-V virtual machine)
This conversion is supported in a backup plan or in a separate conversion plan created on the Plans tab.
Support for Windows Server 2019 with Hyper-V and Microsoft Hyper-V Server 2019
Support for Citrix XenServer 7.6
The boot menu (in the text form) can be used when booting a Citrix XenServer virtual machine.
Backup locations
The Acronis Storage product name changed to Acronis Cyber Infrastructure.
Administering
It is possible to add a comment to a device on the device Details pane. Devices can be searched and organized in dynamic groups by comments.
In a domain environment, local accounts on the management server are not added by default to the Acronis Centralized Admins group and to the organization administrators list.
The name of the Acronis Management Server service (ams) is changed to acrmngsrv, to avoid name conflicts with other software services.
Support for new operating systems
Support for RHEL 7.6
Support for Ubuntu 18.10
Support for Fedora 25, 26, 27, 28, 29
Support for Debian 9.5, 9.6
Support for Windows XP SP1 (x64) and SP2 (x64) is resumed
Support for Windows XP SP2 (x86) is resumed with a special version of Agent for Windows
Support for new languages
Support for seven more languages:
Bulgarian
Norwegian
Swedish
Finnish
Serbian
Malay
Indonesian
What's new in Update 3.2
Backup
The capability to stop an execution of a backup plan from the Plans tab.
Support for new operating systems
Support for Windows Server 2019
Support for CentOS 7.5
Support for ClearOS 7.4
Support for macOS Mojave 10.14
Virtualization
Support for Citrix XenServer 7.3, 7.4, 7.5
Support for Nutanix AHV
What's new in Update 3.1
The maximum number of physical machines that can be registered on a management server increased from 2000 to 4000.
The number of virtual machines that Agent for VMware or Agent for Hyper-V backs up simultaneously can be limited via the registry or the agent configuration file. Unlike the similar setting in backup plan options, this parameter limits the total number of virtual machines for all backup plans that the agent runs simultaneously.
What's new in Update 3
New features available in all on-premise deployments
Backup
The Multi-volume snapshot backup option is available when backing up Linux.
The data output speed can be specified as a percentage, in addition to kilobytes per second.
The "File-level security" backup option is discontinued. The NTFS permissions for files are always saved in file-level backups.
Automatic troubleshooting of VSS-related issues:
When backing up disks or volumes with Agent for Windows
After taking a VSS-based snapshot fails, before retrying, Acronis Backup analyzes the log and performs troubleshooting steps, if appropriate. If three consecutive retries fail, the error message recommends to download and use Acronis VSS Doctor.
When backing up Microsoft SQL Server databases
Prior to taking a snapshot, Acronis Backup checks the SQL Server configuration for issues that may cause a VSS snapshot failure. If issues are found, a warning with recommendations is added to the log.
Recovery
The new recovery option Boot mode determines the boot mode (BIOS or UEFI) for the Windows system being recovered.
Security
New system settings are available to organization administrators:
Log out users after a configurable period of inactivity
Show notification about the last login of the current user
Warn about local or domain password expiration
Applications
Starting with Microsoft Exchange 2010, Exchange Server data can be backed up and recovered by using a less-privileged account than a member of the Organization Management role group:
For databases, membership in the Server Management role group is enough.
For mailboxes, membership in the Recipient Management role group and the enabled ApplicationImpersonation role are enough.
Virtualization
Support for VMware vSphere 6.7 (ESXi configuration backup is not supported)
Recovery to the original virtual machine from a backup that contains not all disks of this machine.
Previously, this operation was possible only under bootable media. The backup console allowed the recovery only if the machine's disk layout exactly matched that in the backup.
Acronis Backup appliance
The 15-second timeout is removed from the Acronis Backup appliance installation menu. The installer waits for the user to review and confirm the settings.
The CentOS kernel is updated in the Acronis Backup appliance, to address the Meltdown and Spectre threats.
Bootable media
It is possible to use any supported keyboard layout when working under bootable media. The set of layouts is defined in the LAYOUT kernel parameter.
Support for new operating systems
Linux kernel versions 4.12 - 4.15
Red Hat Enterprise Linux 7.5
Ubuntu 17.10, 18.04
Debian 9.3, 9.4
Oracle Linux 7.4, 7.5
New features available with the Advanced licenses only
Backup
The capability to configure a backup plan to use specific tape devices and tape drives.
Applications
Application-aware backup of Linux machines running Oracle Database.
Administering
The capability to create dynamic groups corresponding to Active Directory organizational units.
What's new in Update 2
New features available in all on-premise deployments
Administering
Administering user accounts is available on a management server that is installed in Linux
Installation and infrastructure
Acronis Backup appliance for automatic deployment of Linux, the management server, Agent for Linux, and Agent for VMware (Linux) on a dedicated virtual machine
When adding a Windows machine in the web interface, it is possible to select the name or IP address that the agent will use to access the management server
Automatic and manual checks for updates
Security
The backup console supports the HTTPS protocol out of the box
The management server can use a certificate issued by a trusted certificate authority, instead of the self-signed certificate
Non-root users can be added as administrators to a management server that is installed in Linux
Scheduling backups
New scheduling options:
Waking up a machine for backup from the sleep or hibernation mode
Prevention of the sleep or hibernation mode during a backup
The option to prohibit running missed backups on a machine startup
New backup start conditions, handy for backing up Windows laptops and tablets:
Save battery power
Do not start when on metered connection
Do not start when connected to the following Wi-Fi networks
Check device IP address
In the Monthly schedule, selection of individual months during which backups will run
The capability to start a differential backup manually
Backup locations
Storing each machine's backups in a folder defined by a script (for machines running Windows)
A locally deployed Acronis Storage can be used as a backup location
Applications
Recovering Microsoft Office 365 mailboxes and mailbox items to Microsoft Exchange Server and vice versa
Support for new operating systems and virtualization platforms
macOS High Sierra 10.13
Debian 9.1 and 9.2
Red Hat Enterprise Linux 7.4
CentOS 7.4
ALT Linux 7.0
Red Hat Virtualization 4.1
Usability improvements
Renaming locations on the Backups tab
The capability to change the vCenter Server or ESXi that is managed by Agent for VMware in Settings > Agents > agent details
New features available with the Advanced licenses only
Administering
Creating units is available on a management server that is installed in Linux
Installation and infrastructure
When adding a managed location, it is possible to select whether the agents will access the storage node by using the server name or IP address
Usability improvements
Adding a managed location can be initiated from the storage node properties panel
Tape support
Full support for the LTO-8 technology. See Hardware Compatibility List for the exact names of the tested devices.
What's new in Update 1
Mass deployment and upgrade utility for unattended agent deployment.
Detailed managed location statistics are now shown on the location information window.
What's new in Acronis Backup 12.5
Unique! Acronis Active Protection to proactively detect and protect systems from ransomware attacks.
Centralized backup policies, static and dynamic groupings, and the ability to manage, delegate, and establish roles for multiple administrators - all to support larger environments and greater volumes of data.
Customizable dashboards and advanced reporting for quick insights into your entire IT infrastructure.
Unique! Backup of XenServer, Linux KVM, Red Hat Enterprise, Virtualization, and Oracle VM Server for complete protection of any virtual environment.
Support for tape drives, autoloaders, and tape libraries for off-site storage to ensure compliance with company regulations.
Off-host backup management operations, including staging (moving), replication (copying), validation, and retention (cleanup) of backups.
Unified, web-based, touch-friendly, centralized management console to reduce management complexity.
Unique! Protection for VMware vSphere ESX(i) and Microsoft Hyper-V hosts and VMs for complete protection of any virtual workload.
VMware VM replication with WAN optimization for faster disaster recovery
Unique! Acronis Instant Restore (Run Backup as a VM) and vmFlashback for VMware & Hyper-V to reduce recovery time objectives (RTOs).
SAN storage snapshots support for VMware backups to reduce ESXi resource utilization.
Remote and automated bootable media for significant reduction of the RTO of remote systems and data centers.
Issues fixed in Update 4
This section describes issues that have been fixed in Update 4.
Issues fixed in build 12730
Installation and upgrade
[ABR-203595] Installation of Acronis Backup in Windows fails if performed by a user who is not an administrator on this machine. The following error appears: "Failed to open Service Control Manager on machine."
[ABR-200792] Acronis Backup installer scans through the TapeLocation folder (which contains the tape contents cache) while updating an existing Acronis Backup installation and this takes a very long time.
[ABR-199995] Random (dynamic) UDP ports are unexpectedly opened during installation of Acronis Backup Agent for Windows and during backup.
[ABR-198862 + ABR-203923 + ABR-211120] An agent is not registered on the management server during a remote installation if this agent was registered on a different management server before. The following error appears: "Get tenant of agent in AMS failed."
[ABR-197560] Remote agent update sometimes fails with the following error: "The service cannot be started, either because it is disabled or because it has no enabled devices associated with it".
[ABR-166851] The Acronis Management Server service fails to start on the machine where "HPE Agentless Management Service" is running, due to service names conflict (both share the "AMS" name).
[ABR-166332] Some Acronis Backup components (for example, Acronis Storage Node) may fail to register on the management server while being installed simultaneously. The following error appears: "Getting token failed."
[ABR-130789] The Acronis Management Server service fails to start if the service user is changed from the default "./ams user" to "Network Service".
[KERNEL-2315] A Microsoft Windows Hyper-V host may crash in rare cases due to installation of the Acronis file_tracker.sys file system driver.
Common
[ABR-215977] Custom NTFS permissions for the folders located in a volume root are not recovered if the backup format is Version 12.
[ABR-214370] Some sensitive data may be captured in the backup traffic between Agent for VMware (Virtual Appliance) and a backup location managed by Acronis Storage Node.
[ABR-211378] A file recovery may fail if the backup was created by an agent running in a different Windows version. The following error appears: "Access to the file is denied."
[ABR-210974] Mounting a large backup may fail with the "Pathes to mounted folders not found" error.
[ABR-210602] File/folder permissions in Linux may not be correctly recovered if the files are recovered to a non-original location.
[ABR-210018] IOPS performance of NVMe and RAID disks is impacted after installation of Agent for Windows in Windows Server 2016 or later. This is caused by the Acronis SnapAPI driver (snapman.sys)
[ABR-209323] Backup or backup replication to specific NAS models fails if the backup format is Version 12. The following error appears: "Cannot create a backup of the specified type in archive 'archive ID' because it contains backups of another type. A backup archive can contain backups of one type only."
[ABR-209251] Logs of the TaskManager component are not retained properly and may consume gigabytes of space in large environments.
[ABR-208326] Activities are not retained properly on the backup agent side if there are thousands of them (for example, when the agent performs many backups a day).
[ABR-206879] A backup from WinPE-based media to a deduplicating location fails. The following error appears: "Feature 'Deduplication' is not available due to license restrictions."
[ABR-206077] Unexpected "Deleting vault" activity appears and completes with an error when restarting the Acronis Storage Node service.
[ABR-204739] Acronis Monitoring Service consumes an excessive amount of RAM and CPU when a large number of devices (more than 3000) are registered on the management server.
[ABR-204638] Acronis Monitoring Service fails to start if the HTTP_PROXY environment variable is set.
[ABR-204470] The Acronis Management Server service crashes when editing a backup plan that includes more than 3500 Microsoft Exchange mailboxes.
[ABR-204466] Disk/volume recovery fails if the ext4 file system in the backup contains a file that is larger than 12.5 percent of the entire file system size. The following error appears: "Inode Is Corrupted".
[ABR-204341] The option "Continue booting the operating system in X seconds" does not work (the OS does not start upon the timeout) when booting a machine from Acronis PXE Server with uploaded Linux-based bootable media.
[ABR-202159] A volume recovery fails if the backup contains a corrupted file system, even though volume resize is not required.
[ABR-201622] The Managed locations column on the Settings > Storage nodes tab does not contain data (the number of locations).
[ABR-200589] A backup of a Linux system with a lot of mount points (the sum of records for them exceeds 32 KB) fails. The following error appears: "Internal error: record is greater than 32K."
[ABR-199955] Service_process.exe may crash during a backup if the backup format is Version 12 and the backup chain includes a large number of backups.
[ABR-199970] The GUI does not show up when booting specific hardware models from Acronis PXE Server.
[ABR-197152 + ABR-211661] Files cannot be browsed and recovered from a disk-level backup of a ReFS-formatted volume in Windows Server 2019.
[ABR-195120] It is not possible to delete more than 50 agents from the management server at once.
[ABR-194696] An unclear error message appears in the log file if the backup was interrupted by a system reboot.
[ABR-193293] The Acronis Management Server service occasionally crashes when deleting more than 500 machines at a time.
[ABR-191388] A backup scheduled on the When a user logs on to the system and When a user logs off the system events does not run upon these events.
[ABR-188862] A backup to the cloud storage may fail when applying retention rules. The following error appears: "0xfc0026: 16515110".
[ABR-188360] The network settings specified while creating WinPE-based media are ignored and reset to DHCP when booting from this media.
[ABR-188297] Mounting a backup located on a network share fails with the "The device is not ready" error.
[ABR-176180] The backed-up files and folders are mixed when sorted by name in the backup console.
[ABR-171148] The retention rule for Daily backups does not work if the retention rules are set for Monthly, Weekly, and Daily backup sets, but the slider in the backup schedule is set to Monthly or Weekly.
[ABR-169543] The NTFS permissions are lost when files are recovered from a disk/volume backup to a network share.
[ABR-169126] The output speed limitation defined in percent does not work correctly.
[ABR-160290] The 'xfs_repair' utility, available in bootable media, cannot repair modern XFS file systems (for example, created in CentOS 7.3 or higher versions).
[ABR-151180] Backup events are duplicated in Windows Event Log when the corresponding option is enabled in a backup plan.
[ABR-139276] Backups created under bootable media appear in the backup console with the "localhost" name instead of user-specified name.
[ABR-136109] Acronis Secure Zone cannot be browsed by using Windows Explorer.
[ABR-134942] The Export and Validate actions are not available for backups if only the Standard licenses are registered.
[ABR-139892 + ABR-137884 + ABR-131473 + ABR-131479] Backup sizes shown on Dashboard and listed in Reports are incorrect.
[ABR-130385] Recovery points of deleted managed locations are still visible during recovery.
[ABR-121244] When a virtual machine backup fails and then completes successfully on subsequent run, the Activity failed alert is preserved and is not canceled automatically. This issue affects only backup plans that include more than one virtual machine.
Application support
[ABR-211531] Application-aware backup of a machine with SQL Server completes with the "BACKUP LOG cannot be performed because there is no current database backup." warning if a read-only SQL database is present.
[ABR-204575] The SQL database recovery wizard hangs on Loading... after changing the target machine in Recover to.
[ABR-200080] A backup of Exchange mailboxes may fail on highly loaded systems, due to PowerShell unresponsiveness. The following error appears: "Failed to initialize PowerShell adapter."
[ABR-199016] Browsing the backed-up Exchange data causes the "Error occurred while opening the file." error, if the Exchange database path in Exchange configuration starts with the drive letter in lower case, for example "e:\" instead of "E:\".
[ABR-192313] The incorrect date of "November 29, 2076" is displayed when browsing Exchange calendar objects in an application-aware backup.
[ABR-173532] A backup of Exchange mailboxes may fail if network connectivity between the Active Directory domain controller and Microsoft Exchange Server is unstable.
[ABR-169246] A backup of a Microsoft SQL Server 2008 instance may complete with the "[Microsoft][ODBC SQL Server Driver][SQL Server]DDL statement is not allowed." warning.
[ABR-168890] An application-aware backup of a virtual machine running in VMware vSphere 6.5 or later may not truncate transaction logs of Microsoft Exchange 2016.
[ABR-145282] Options to recover data of applications, such as Microsoft Exchange or Microsoft SQL, are available while browsing recovery points via Agent for Linux (that does not support these operations). An attempt to select these options fails. The following error appears: "Factory for a command with ID = '8C769D85-F9AF-4BB8-AB9D-D0658C9DF7F7' cannot be found."
Mac support
[ABR-207964] Logs from Mac's unified logging system are not captured by the Acronis system report utility.
[ABR-207194] A backup to an SMB share fails with various errors if the specified credentials are incorrect but guest access to the share is allowed.
[ABR-195195] Excessive logs are generated by the Acronis Scheduler Service if a backup plan uses The backup location's host is available condition and the host is not available.
[ABR-124845] Although it is possible to set a backup schedule by events and conditions in a backup plan applied to machines running OS X, Agent for Mac does not perform backup according to such schedule.
Virtualization
[ABR-212963] The logs of Agent for VMware (Virtual Appliance) may be flooded with "Assertion failed: !"Unknown scsi host type"" errors if a misconfigured device is attached to the appliance.
[ABR-210035] Multiple VM replication tasks executed in parallel may fail if the replicas are located on the same ESXi host where Agent for VMware (Virtual Appliance) is running. The following error appears: "Waiting for response from the replica disk service has timed out."
[ABR-209498] The incorrect warning "Error 0x530114: The SCSI ID of device 'sdd' is empty" may appear when backing up virtual machines with specific configuration by using Agent for VMware (Virtual Appliance) and the HotAdd backup mode.
[ABR-207900] Virtual USB controllers are not preserved after a recovery to a new VM on VMware ESXi.
[ABR-207904] The "svga.vramSize" parameter of the virtual machine is not preserved after a recovery to a new VM on VMware ESXi.
[ABR-207227] Agent for Hyper-V sporadically goes offline in the backup console if installed on a Hyper-V host which is part of a huge cluster (with hundreds of virtual machines in it).
[ABR-205738] File recovery from an agent-less backup of a Linux virtual machine with LVM may not work for specific LVM configurations.
[ABR-204439] Agent-less backup of a VMware ESXi virtual machine with Oracle ASM volumes is slow due to the invalid CBT record.
[ABR-204259] The Hosts and clusters group is empty if Hyper-V cluster nodes were added from a child unit context via remote installation of Agent for Hyper-V to all nodes of the Hyper-V cluster.
[ABR-201294] The "Encryption as a machine property" feature cannot be used for backups created by Agent for VMware (Virtual Appliance) due to missing manage_creds.py script on this agent.
[ABR-200593] The memory consumption of the "mms" process on a Virtuozzo 6 host constantly grows after a backup is performed.
[ABR-199944] A replication of a VMware ESXi virtual machine fails if there is a space symbol in the target datastore name. The following error appears: "Failed to upload file '404'".
[ABR-173514] A backup of a Hyper-V virtual machine with shared VHDX disks may contain inconsistent data for these disks if the CBT option is enabled.
[ABR-170916] vSphere 6.7 cannot be managed by Acronis Backup 12.5 if there is a PMEM datastore present in the vSphere infrastructure. Symptoms: Agent for VMware (Virtual Appliance) cannot be deployed from the management server with the "Failed to obtain information about hosts from VMware vCenter Server 'IP'" error on the vCenter connection stage.
[ABR-168922] VM replication from ESXi 6.5/6.7 to ESXi 6.0 or lower version fails with "A specified parameter was not correct: configSpec.guestId" if the Guest OS version of the replicated VM is not supported by target ESXi host version (Examples: Oracle Linux, CentOS 7 (64-bit))
[ABR-165033] When manually starting a backup for some of machines included in the backup plan (for example, for 5 machines out of 10 total), the backup may also start for other machines unexpectedly.
[ABR-145237] The Acronis Backup Appliance allows including itself in a backup plan along with other virtual machines, which causes issues with VMware snapshots consolidation after a backup.
[ABR-118214] Native replicas of Microsoft Hyper-V virtual machines cannot be distinguished from the source virtual machines due to matching WMI IDs.
[ABR-113660] It is possible to select Agent for VMware (Virtual Appliance) for backup, while it should not be.
Tape management
[ABR-215254] Exporting a backup from a tape device that is connected via iSCSI under Linux-based bootable media, fails. The following error is displayed: "An invalid URI".
[ABR-208806 + ABR-198282] Recovery of files/folders from a disk-level backup of a Linux machine is not possible if the backup is located on a tape and includes the Linux swap partition.
[ABR-208006] Orphaned tape locations cannot be removed from the backup console.
[ABR-197139] The Eject tapes after each successful backup of each machine option value is not saved after editing a backup plan.
[ABR-173238] Backups located on tapes managed by Acronis Storage Node may appear in different parts of the user interface even after the corresponding tapes were erased.
[ABR-128092] The error message "Input/output error" is unclear in the following situation: a backup to tapes fails because there are no tapes in the Free tapes pool and the Backup options > Backup format option is set to Version 12.
Issues fixed in Update 3.2
This section describes issues that have been fixed in Update 3.2.
Issues fixed in build 11010
Installation and upgrade
[ABR-172115] Installation fails to register Agent for Windows and Acronis Storage Node components on the management server during update from Acronis Backup 12.5 Update 2 or the previous versions in case the components list was modified before the update.
Common
[ABR-168992] A false-positive “The backup did not start as scheduled.” alert is generated when the interval between scheduled backups is more than 50 days.
[ABR-194989] The Acronis Management Service dependent zmqgw.exe process occasionally crashes when there is a large number of devices (2000+) registered on the management server.
[ABR-190754] Custom machine groups may be partially missing while creating a backup plan and choosing the list of devices to be included into this plan.
[ABR-189640] Activities on the management server remain running and cannot be stopped if the agent which produced these activities is out of sync with the management server, for example if the machine was restored from a backup.
[ABR-189039] Acronis Backup 12.5 Advanced licenses for Chinese language are not enabling advanced features. Acronis Storage Node and tapes management becomes unavailable.
[ABR-185216] VSS provider selection is unavailable in Backup Options->Volume Shadow Copy (VSS) settings.
[ABR-177723] If a backup is exported/replicated to another location, then the retention rules applied to this exported/replicated backup do not perform data clean up properly, thus leaving orphaned backup chains. As the result the backups' size in original and secondary backup locations differs significantly even though both backups contain the same set of recovery points.
[ABR-177645] Backup to an SMB share with the Version 12 backup format fails with "Input/Output" error ("code":"5005") if the SMB share returns "INVALID_PARAMETER" on file sparse requests. Typically this problem affects SMB shares hosted on NAS devices.
[ABR-176719] The Managed Machine service ("mms") crashes on Linux during backup to the cloud storage through a configured proxy connection if the proxy server becomes unavailable.
[ABR-175989] Backup to an SMB share with the Version 12 backup format does not properly fail and hangs instead if there is no free space left on the share.
[ABR-174598] Backup replication plans fail automatically if they last for more than 12 hours. This problem does not affect regular backup plans with backup replication option enabled.
[ABR-141944] False alerts 'Machine is offline for more than XX days' are generated when starting the management server if the machine is online for more than XX days.
Active protection
[ABR-188613] In some cases, the "Self-protection" feature (part of Acronis Active Protection) produces false positive alarms about the C:\Windows\System32\rundll32.exe binary.
Tape management
[ABR-135829] The "arsm.exe" process consumes excessive amount of memory during files/folders backup with the enabled retention rules to a centralized tape location managed by Acronis Storage Node.
Application support
[ABR-181405] In some cases service_process.exe crashes when performing an application-aware backup of Windows Server 2003 machine running SQL 2005.
Mac support
[ABR-180057] "Entire machine" backup of MacOS Sierra fails with "Failed to lock the volume." + "Operation not permitted" errors if there is a "Recovery HD" volume present.
[ABR-175023] "Entire machine" backup does not resume and hangs after the machine wakes up from the sleep mode.
[ABR-168967] In some cases, backup of APFS-fromatted volumes with the Version 12 backup format fails with an "input/output" error.
Issues fixed in Update 3.1
This section describes issues that have been fixed in Update 3.1.
Issues fixed in build 10310
Installation and upgrade
[ABR-172452] Backup Monitor does not start automatically after an update from Acronis Backup 12.5 Update 2 due to a missing autostart record in the Windows registry.
[ABR-160804] The License Server service starts consuming ~10% of CPU when there are ~4000 machines registered on the management server.
Common
[ABR-173911] Backup plans with the Convert to a virtual machine option enabled may fail in some cases with the "The password for the protected backup is incorrect" error if the backup archive is protected with password.
[ABR-173518] Backup to NFS shares fails if the name of the backed-up machine contains spaces. Applicable to agentless VM backup performed by Agent for VMware or Agent for Hyper-V.
[ABR-171198] Collecting system information report from Acronis Management Server fails if the remote Microsoft SQL 2014 instance is used as a database for the management server.
[ABR-170852] CentOS 7 does not boot when restored to a Citrix XenServer 7.0 environment.
[ABR-170640] Empty .zip is downloaded when restoring a folder which contains " ' " (apostrophe) symbol in its name.
[ABR-170140] Files/folders backup of OneDrive folder fails with "The file is read-only" error after Windows 10 update to 10.0.17134 build.
Application support
[ABR-174095] Exchange or Office 365 mailbox backup may occasionally fail with the "Can't connect to the mailbox of user Mailbox database guid" error.
Issues fixed in Update 3
This section describes issues that have been fixed in Update 3.
Issues fixed in build 10130
Installation and upgrade
[ABR-158404] Remote agent installation fails if the credentials for the target machine are specified in the "IP\username" format.
[ABR-156822] The management server installation does not show any errors if the default 9877 port is already used by a third-party service on the machine.
[ABR-156718] The management server installation on machine with "Ь" symbol in the hostname hangs on 99%.
[ABR-155518] The management server crashes when installed on system if the hostname contains non-standard symbols (for example Chinese hieroglyphs).
[ABR-152904] Remote update of agents on machines forcibly installs the Backup Monitor component even if it was not installed before.
[ABR-150690] The "Show details" link in the backup email notifications points to a wrong management server address after updating Acronis Backup 12.5 from build 3869 or 7970.
[ABR-150293] Windows Registry should be used to resolve the SID of the "Acronis Centralized Admin" Group instead of WMI calls during installation (remove dependency on WMI).
[ABR-137669] The management server installed on CentOS 7 produces "Error 0x64ffff: Another instance of this application is already started." every minute in /var/log/messages.
Common
[ABR-163794] Files/folders backup plan using [All Files] policy rule fails when applied to multiple machines.
[ABR-163233] UEFI system restored to machine with UEFI Legacy mode (e.g. BIOS mode) enabled fails to boot with "NTLDR is missing" error.
[ABR-162985] Test email notifications cannot be sent if the SMTP server does not respond within the 5 seconds time out (for example if the management server is located behind a firewall).
[ABR-161579] Empty .zip package is downloaded when recovering folders that contain the "&" symbol in their names.
[ABR-160870] Adding 20+ new backups into an existing backup replication plan causes the web console UI to fail (infinite loading).
[ABR-160804] Acronis License Server service consumes ~10% of CPU unexpectedly.
[ABR-160344] Recovery of files/folders prompts for user interaction in some cases when the "Silent mode" option is enabled.
[ABR-158297] Refreshing recovery points fails if the agent which performs the operation is managing more than 1000 devices. Example of such agent is Agent for VMware connected to vSphere with huge amount (1000+) of virtual networks.
[ABR-157146] Linux-based bootable media crashes when booting on a system with a specific 4TB+ external USB drive connected (example of USB drive model: Seagate SRD00F2).
[ABR-156866] Sorting devices by name in the Devices list is performed separately for names starting with the same letter in upper and lower case.
[ABR-156469] Copying files from the root folder of the archive while exploring it via Windows Explorer (double-click) causes the "No such interface supported" error.
[ABR-155614] In some cases, disk/volume recovery fails with the "Cannot copy the disk" error if the source empty disk is larger than the target disk.
[ABR-155192] The "Universal" licenses cannot be synced between the Acronis account and the management server.
[ABR-153669] Files/folders backup of huge amount of files with the Version 12 backup format may hang when applying retention rules.
[ABR-151106] The EN-GB keyboard layout is not available in Acronis Backup bootable media environment.
[ABR-151077] Acronis system information files (/var/lib/Acronis/sysinfo_***) can be opened by unprivileged user, while it should not be possible.
[ABR-150772] Backup plan creation fails with "Fail to obtain the lock on resource" in case there are more than 3000 machines registered on the management server.
[ABR-150601] Renaming a backup plan while editing it from the Plans tab causes the plan to be saved (should stay in editing mode).
[ABR-150370] Email notifications about successful backups are not sent if the "Activity not responding" alert was triggered during the plan execution.
[ABR-150048] The Apply LVM/RAID option is not available in bootable media environment during Linux disks/volumes recovery.
[ABR-150024] The 'service_process' service crashes on CentOS 7.4 in some cases when the backup to a network share is performed using the Version 12 backup format.
[ABR-149815] Backup using the Version 12 backup format fails if the backup chain contains incomplete (for example canceled) incremental or differential backups.
[ABR-148911] Acronis services may crash when installed on a Linux system with connected "EMCpower" multipath devices.
[ABR-148636] Agent appears as offline in the backup console if it is behind a proxy and the connection to the proxy server was temporarily lost.
[ABR-148390] Incorrect "Backup status unknown" or "Agent being offline at scheduled time" alerts may be shown in some cases.
[ABR-147976] Backup plan which uses "On the system shutdown" schedule condition (by event) starts the backup even if the system is rebooted.
[ABR-147814] NTFS permissions are not restored when restoring files from disk/volume backup.
[ABR-143797] Files/folders backup to the cloud storage fails with "The specified file does not exist" if the first backup was not completed (failed or canceled).
[ABR-143678] Files/folders backup to the cloud storage may fail with "Internal error in library. The linked position is unknown." error.
[ABR-142667] There is no "DNS suffix" option in the network configuration settings while creating a bootable media via Acronis Media Builder.
[ABR-140753] Dashboard loads for more than 30 seconds in the web console interface if the are more than 4000 machines registered on the management server.
[ABR-140143] Backup plan does not start on schedule when the start by "The backup location's host is available" event option is enabled.
[ABR-139362] LUKS-encrypted LVM volumes are not backed up during the "Entire Machine" (disk/volume) backup.
[ABR-130696] The "Files filters" option is not applied to Windows dynamic volumes.
[ABR-129608] If a backup location was renamed then its name reverts to original after a backup to this location is performed.
[ABR-117591] Full backup is always created on the first day of each month ignoring the "Weekly full, daily incremental" scheme settings.
[ABR-108939] Removal of a Hyper-V host from the management server (by deleting Agent for Hyper-V) does not release a previously consumed Virtual Host license.
Roles and units management
[ABR-158129] The email address of the administrator account is not shown in the web console after the management server is restarted.
[ABR-156349] Login to the web console as an administrator fails when there are more than 8 units created in "Organization".
Acronis Storage Node, Acronis Storage and data catalog
[ABR-164419] ManagementServer.exe, zmqgw.exe and StorageServer.exe may crash after backing up a disk with 10 000 000+ files due to extensive cataloging activities.
[ABR-155526] Exporting a backup with the Version 12 backup format from a managed location via "acrocmd export archive" fails with "The archive is invalid or its type is unsupported." error.
[ABR-148374] When Acronis Storage Node was upgraded from 11.7 and a new managed location is created on a network share, the credentials for it are stored in plain text within Acronis sqlite database files. The issue is not reproduced on clean installation.
[ABR-146991] Backup to a location on Acronis Storage fails with "Failed to access the backups" if Acronis Storage along with the backup agent was re-registered on different management server.
[ABR-135390] Full backups appear as "incremental" ones while browsing the backups in a managed location for a backup with the Version 12 backup format after retention rules were applied.
[ABR-105287] Replication of files/folders backups between two managed locations based on network shares is slower than expected.
Virtualization
[ABR-163751] In some cases deletion (unmounting) of a virtual machine running from a backup causes the "Cannot perform this operation with virtual machine '[Machine_name]' twice." alerts to appear every hour.
[ABR-157608] The sqlite database grows too fast on the agent which manages a huge virtual environment. Example of such agent is Agent for VMware connected to vSphere with huge amount (1000+) of virtual networks.
[ABR-152647, ABR-160088] The "Files filters" backup option does not work properly when backup is performed by Agent for VMware (Virtual Appliance) and the full path to excluded/included folders is used without a trailing backslash (for example "C:\share").
[ABR-152472] The list of Agents for VMware (virtual appliances or Windows agents) available for VM binding may become empty in highly loaded environments.
[ABR-152008] VM recovery on Hyper-V 2016 successfully completes with "Failed to add resource to virtual machine" false warning in some cases.
[ABR-150456] Hyper-V VM restored from backup of Windows 10/Windows 2012R2 (EFI) physical machine does not boot with the "NTLDR is missing" error.
[ABR-144733] All policy rules, except for "[Disk #]", do not work for agentless backup of Linux VMs.
[ABR-143835] A lot of "Reconfigure virtual machine" events are present in vSphere while backing up VMs which contain disks with empty NT signature. Example: AltLinux VMs.
[ABR-141843] Recovery from a backup of a physical EFI CentOS 7 machine into a Gen2 Hyper-V VM via bootable media produces an unbootable system.
[ABR-133681] A backup of an ESXi virtual machine fails if all of the following conditions are met: the backup is performed by Agent for VMware (Windows), the agent is installed in a non-English Windows, and Acronis Managed Machine Service is running under a system account whose name is localized. The following error appears: "You do not have access rights to this file."
[ABR-132587] Backup of a vCenter appliance VM fails with a vCenter connection error when the backup is performed by Agent for VMware connected to this vCenter.
[ABR-98984] VM backup or replication fails with "GXT: The item provider has skipped the report of an item with key '('995E4B11-5745-1C78-7F1A-B9CD7C9001BE','mms::vm::datastore')'" error when the VM hard disk or a connected ISO image is located on an inactive datastore. This error causes backup failure for all VMs included into backup plan, not only for affected one.
Tape management
[ABR-150743] "Acronis" managed location on tape appears after the update from Acronis Backup 11.7 and cannot be deleted.
[ABR-148839] Backup to a standalone tape with the "Eject tapes after each successful backup of each machine" option enabled fails when the tape reaches full capacity. It should prompt to install a new tape instead.
[ABR-147449] The "Enable file recovery from disk backups stored on tapes" option is ignored and always enabled which causes tape location folder (which contains index of the files) to grow too fast.
[ABR-130411] The "Eject tapes after each successful backup of each machine" option state is not saved in default backup options.
Application support
[ABR-164665] Simultaneous backup of multiple Office 365 mailboxes may randomly fail with "URI is empty" error.
[ABR-162461] Exchange Mailbox backup cannot be enabled when Acronis Backup is installed as "All-In-One" appliance.
[ABR-150271] Backup of some Office 365 mailboxes fails with ".NET exception 'System.InvalidOperationException' has occurred: There is an error in XML document (1, 6998365)" error.
[ABR-146976] Service_process.exe occasionally crashes on applying retention rules if the SQL database backup contains more than 60 recovery points.
[ABR-144148] Recovery and Validation activities fail with the "Failed to resolve item 'Session/Server/' by its reference." error for SQL database backups saved to Acronis Cloud after retention rules are applied.
Issues fixed in Update 2
This section describes issues that have been fixed in Update 2.