Acronis Cyber Protect Cloud

Technical Questions & Known Solutions - Backup Functionality

Acronis Cyber Protect, Acronis Cyber Backup: Operation fails with "Windows error: (0x80070299) The requested operation could not be completed due to a file system limitation" or "Cannot write data to file <path> due to a file system limitation"
Acronis Cyber Protect Cloud: Performance issues on EU7 (EU1 DC)
Acronis Cyber Protect Cloud: installation or backup fails with C21.11 or C21.12 agent on CloudLinux7.9 or CloudLinux8.5 (8.x) due to REMAKE_INITRD in the dkms.conf file
Acronis Cyber Protect Cloud, Acronis Cyber Backup 12.5: Backup of files on network share finishes with warning "No such file or directory"
Acronis Cyber Protect: Backup finishes with warning "Failed to read the snapshot of the machine because the snapshot no longer exists"
Acronis Cyber Protect Cloud: Backups to Cloud fail with "The cloud storage quota is exceeded. Further backups will fail" after storage quota was increased
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Activity fails with "The specified file does not exist"
Acronis Cyber Protect Cloud: Compatibility with RHEL/CentOS/CentOS-stream Linux kernel versions 4.18.0-315 to 4.18.0-xxx
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup or another activity fails with "The archive is invalid or its type is unsupported"
Acronis Cyber Backup 12.5, Acronis Cyber Protect 15, Acronis Cyber Protect Cloud: Backup hangs if Kaspersky endpoint security is enabled on agent machine
Acronis Cyber Protect: Agentless backup of Hyper-V machines fails if virtual machines are stored on Microsoft`s Storage Spaces Direct (S2D)
Acronis Cyber Protect Cloud: Cannot save plan with large number of "Items to back up"
Acronis Backup: Corrupted MFT, Run List, Block Bitmap or Index forces Sector-by-Sector backup mode
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Activity fails with "Misc error while local file io"
Acronis Cyber Protect Cloud: Backup fails with "There is not enough free space" or "There is not enough free space in the backup destination"
Acronis software: *.OST-file is not backed up
Acronis Cyber Protect Cloud: C2C Backups are Stuck in Pending State
Acronis Cyber Protect Cloud: backup fails with TLS/SSL-related errors
Acronis Cyber Protect: Agent update hangs or fails if DeviceLock service cannot be stopped during installation
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Activity fails with "Operating system error: The shadow copy provider had an error"
Acronis Cyber Protect Cloud: Microsoft OneDrive backup fails with "Service 'Microsoft OneDrive' is temporarily not available: 'Error: 404 GET"
Acronis Cyber Protect Cloud: C2C backups are queued on EU1 and EU8 DCs
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup fails with "Unknown status"
Acronis Cyber Protect Cloud: O365 mailbox has "Not protected" status although Group Backup plan is applied
Acronis Cyber Protect Cloud: SharePoint backup fails with the "Internal error"
Acronis Cyber Protect Cloud: Microsoft 365 backups fail with "Internal Server Error"
Acronis Cyber Protect: Agentless backup of Hyper-V VMs finishes with a warning "Cannot take checkpoint for 'MachineName' because one or more pass-through disks are attached."
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup fails with Windows error: (0x80070522) A required privilege is not held by the client
Acronis Cyber Backup, Acronis Cyber Protect: backup or replication fails with "Network operation failed" error
Acronis Cyber Protect: OneDrive backup failed with "Microsoft OneDrive is not available" and "Error authenticating with resource"
Acronis Cyber Backup, Acronis Cyber Protect: Backup fails with "POR: Element 'Name' cannot be found”
Acronis Cyber Protect Cloud: C2C backups fail with "[Archive Server]: internal error" on EU1 DC
Acronis Cyber Protect: macOS backup fails with "Operating system error: Resource deadlock avoided"
Acronis Cyber Protect Cloud: backup fails with "Error occurred while creating the file."
Acronis Cyber Protect Cloud Integration with DirectAdmin: Backup fails at the ‘Executing pre-data capture command’ step
Acronis Cyber Protect Cloud: Backup of Machine with MySQL/MariaDB application generates the warning "Jsonrpc call timeout".
Acronis Cyber Protect, Acronis Cyber Backup: Backup fails with "Windows error: (0x80070544) The validation information class requested was invalid"
Acronis Cyber Protect: Hyper-V VM backup fails with "Unexpected call result. Error code 32768"
Acronis Cyber Protect: C2C backup of Microsoft 365 items is slower than expected due to Microsoft throttling
Acronis Cyber Protect, Acronis Cyber Backup: Operation fails with "Windows error: (0x8007051F) There are currently no logon servers available to service the logon request"
Acronis Cyber Protect: Application-aware backup of a VM ends with a warning "The credentials are incorrect."
Acronis Cyber Protect: Backup fails with "Windows error: (0x800705B4) This operation returned because the timeout period expired"
Acronis Cyber Protect Cloud: Backup fails with "Request to the cloud platform failed because the agent is not registered" after disabling tenant
Acronis Cyber Protect Cloud: C2C Agent creates a new full backup instead of incremental
Acronis Cyber Protect Cloud: SQL Application-aware backup generates the warning: "'Failed to save the metadata for group '...'. Reason: 'Error 0x571102: Cannot back up SQL Server database 'master' of instance '..'
Acronis Cyber Protect: Backup fails if [Disk 0] is selected for backup using policy rules
Acronis Cyber Backup: Backup fails with "The driver detected a controller error on device"
Acronis Cyber Backup, Acronis Cyber Protect: Activity fails with "Windows error: (0x800704C8) The requested operation cannot be performed on a file with a user-mapped section open"
Acronis Cyber Protect Cloud: C2C backups fail with "archive is corrupted" on EU1 DC
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Hyper-V virtual machine backup fails with "Failed to obtain associated virtual system settings"

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