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Symptoms

You make an entire machine backup or disks/volumes backup of a machine with Agent for Linux
Backup fails with the following error:
No volumes have been found while processing the 'All Volumes' template.
or
No volumes have been found while processing the 'Fixed Volumes' template

or
The SnapAPI kernel module is not loaded for the kernel currently running on the system. Install the module for this kernel version, and then retry the backup.

You have a backup of SharePoint Online and want to recover files from it.

When you select the recovery point and navigate to the folder within the archive, you see this message:

There are no items to show in this view

Symptoms

Backup fails with:

You have a disk-level backup (of entire machine, individual disks or volumes) and try to restore this backup. Restore fails with: "Error 0x2160008: Format/Resize error. Error 0x70025: Index is corrupted."

Symptoms

You are backing up application data, for example, SQL or Exchange databases, as part of an entire machine backup plan (application-aware backup).

You migrate the machine into another domain.

The next backup fails with an error message:

You have a machine with a backup plan. In a while, you re-register the machine to a different user, but the backup plan still runs although it is not listed among backup plans for this device. If you delete entries about this backup plan via acrocmd, they return in a while.

You have a backup plan with retention rules. Retention task fails with:

Error: An unsupported URI is specified: 'F:\Acronis\#arl:/B0FA4D42-6C34-4261-9A13-00731960BE51/74695400-3457-465B-BA6A-6BE8FAC21BCF/96D11AB5-FF69-4B4C-9884-4BE8778AAECB'.

You are a company administrator.

You open backup management console to restore a backup of your mobile device. In devices, you select the device to restore, but the Restore option is not available.

Backup finishes with warning:

Error 0x10c476: Volume Tracker has failed to open session '\Device\HarddiskVolume2' for volume 'C:'.

You use Acronis Backup 12.5 Update 3 (Build 10130)
You run an application-aware backup of a disk with MS SQL database
You receive a warning: Error: A double slash in the path.
and the following error in logs:Message: Problems detected that may cause a VSS snapshot failure.

(!) This article applies only to the case when you receive both the error and the warning specified above.

You create a backup plan with a pre-set template for schedule - "Weekly full, Daily incremental"

You expect to have only the set amount of full backups, but in fact each month one extra is generated on the first day of the month.

Symptoms

You have Acronis Agent for Hyper-V installed on Windows Server 2019.

In Windows Event logs, you see multiple errors with Event ID 81:

You use Acronis Backup Cloud version 7.7 or Acronis Backup 12.5 with cloud management.

You create an Entire machine backup plan and select 'Version 12' backup format. In the exclusions, you specify one of the partitions, for example E:, to be excluded from the backup.

The specified partition is not excluded from the backup.

Symptoms

You have Acronis Agent installed on a machine, which belongs to a domain.

Acronis Managed Machine Service is running under a local user of this machine: .\acronis agent user or any other user that is not a domain user.

In mms log (C:\ProgramData\Acronis\BackupAndRecovery\MMS\mms.0.log), you notice multiple messages:

You have successfully backed up an SQL cluster to Cloud storage.

You browse the backup in the web console but no items are displayed (the attempt to browse the archive leads to a long "Loading" spinning wheel but even after 1 minute no items are displayed).

However, the contents of the backup are displayed with the expected promptness when listed via Acrocmd.

Symptoms

Backup to cloud fails with:
Error code: 207
Module: 161
LineInfo: 0x0B320396ADFE3CCC
Fields: {"$module":"disk_bundle_vsa64_1299","IsReturnCode":"1"}
Message: Failed to create an archive in location 'arl:/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'.
------------------------
Error code: 26
Module: 161
LineInfo: 0xA0F87A51D6F9CEE1

Installation on Debian fails after it was once cancelled

You have an Office 365 account in the German data center (office.de). You have Acronis Agent for Office 365 installed, but Office 365 tab is not available in the web console.

A backup plan fails on applying retention rules and you receive one of the following errors:

DML: Logic Error: More than one match found.

error 0xfc0026: 16515110

| Pattern: Root (Composite)

| [Is (Common::String) = DMS::BackupLocation]

You have a account with a vast number of machines (several hundreds). You log in to the Web Restore console.

Acronis Backup: Backup of a Linux machine fails with "The SnapAPI kernel module is not loaded for the kernel currently running on the system"

Symptoms

Acronis Backup Cloud: browsing SharePoint Online backups throws "There are no items to show in this view"

Acronis Backup Cloud: backup fails with "Error occurred while creating the file."

Symptoms

Acronis Backup: recovery of disks or volumes fails with "Resize error"

Acronis Backup: "The security database on the server does not have a computer account for this workstation trust relationship" error

Acronis Backup Cloud: backup plan runs on the machine after registering it to a different user (tenant)

[Fixed] Acronis Backup Cloud: retention fails with "Failed to delete the backups" and "An unsupported URI is specified"

Acronis Backup Cloud: restore option is not present for mobile backups in backup management console

Acronis Backup Cloud: "Volume Tracker has failed to open session"

[Fixed] Acronis Backup Products: Warning "Error: There is a double slash in the path"

Acronis Backup: full backup is created on the first day of each month with "Weekly full, Daily incremental" scheme

Acronis Backup: multiple 'Event 81' messages in Windows Event logs on Windows Server 2019 with Hyper-V

Symptoms

[Fixed] Acronis Backup: exclusion of a partition does not work

Acronis Backup: multiple "Error 0xfff0: The specified domain either does not exist or could not be contacted" messages in log

Symptoms

Acronis Backup Cloud: backup of an SQL Cluster cannot be browsed

Acronis Backup Cloud: Backup Fails with "Failed to save the archive metainfo. You either do not have write access to the folder or it is unavailable at the moment."

Symptoms

[Dismissed] Acronis Backup Cloud / Acronis Backup Service: Installation on Debian fails with "Could not detect location of RPM database on Debian system during update"

[Fixed] Acronis Backup Cloud and Acronis Backup 12.5: "The credentials for Exchange server are incorrect. Error code 1802."

[Fixed] Acronis Backup Products: Applying retention fails with "DML: Logic Error: More than one match found" or "16515110 Pattern: Root (Composite) [Is (Common::String) = DMS::BackupLocation]" error

Acronis Backup Cloud: logging in to Web Restore fails wih "504 Gateway Time-out" for large accounts