Acronis Cyber Backup 12.5

Technical Questions & Known Solutions - Backup Functionality

Acronis Backup for VMware: Collecting Logs for Cloud Backup Issues
Acronis Cyber Protect: Backup Fails with "There is not enough space on the volume where the snapshot storage is located"
Acronis Cyber Protect: Application-aware backup fails with "Failed to get the metadata from the 'VMware Snapshot Provider' extension library" or "VSS metadata is missing or corrupt"
"Backup is corrupted" alert
"Backup status is unknown" alert
Acronis Cyber Backup: Disk Backup with Acronis VSS Provider Fails on Windows SBS and domain controllers
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup Fails with "All items specified for backup do not exist", "None of the items selected for backup were found", or "The following selected disks are not found"
Acronis Cyber Backup Advanced: Do Not Set "Eject Tape after Successful Backup" when Backing Up Multiple Machines
Acronis Cyber Protect, Acronis Cyber Backup: Backup of a Linux machine fails with "The SnapAPI kernel module is not loaded for the kernel currently running on the system"
Acronis Cyber Protect Cloud, Acronis Cyber Backup: backup finishes with warning "Creating a crash-consistent snapshot of virtual machine because the creation of its application-consistent snapshot has failed"
Acronis Cyber Protect: Backup fails with "The request could not be performed because of an I/O device error"
Acronis Cyber Backup: Backup of SQL instance fails with "There are no SQL writers" or "No SQL writers are found in the operating system."
Acronis Cyber Protect: Backup fails with "Windows error: (0x800705B4) This operation returned because the timeout period expired"
Acronis Cyber Backup: Backup fails with "Access to the file is denied"
Acronis Cyber Protect, Acronis Cyber Backup: Backup Fails with "Logon failure: unknown user name or bad password"
Troubleshooting Issues with Corrupt Backups
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 Cloud, Acronis Cyber Backup: "Backup plan is canceled" alert or "The operation is canceled by the user" warning
Acronis Cyber Backup: "Access is denied" when selecting a network share with anonymous access as backup destination
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup scheduled on the system shutdown fails with "Backup scheduled on the system shutdown has failed"
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 12.5: Troubleshooting mailbox backup failure
Acronis Cyber Backup 12.5: New tape is used for backup even when free space is available on the previous tape
Acronis Cyber Protect 15, Cyber Backup 12.5: Backup to tape fails with "The storage media is write protected" if tape is LTFS-formatted
Acronis Backup for Plesk/cPanel: 'There is no free quota available for device' error message
Acronis Cyber Protect: Hyper-V virtual machine backup produces warning "Changed Block Tracking (CBT) is not used because there are disk files that do not belong to any disk snapshot."
Acronis Cyber Backup: Backup fails with error "Internal error"
Acronis Cyber Protect Cloud, Acronis Cyber Backup: operation fails with "data is corrupted: CRC mismatch or internal data structures mismatch" or "The archive is corrupted"
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Activity fails with "Operating system error: The shadow copy provider had an error"
Acronis Cyber Backup 12.5: Activities are absent or incorrect on VMs with agent-less backup
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Hyper-V virtual machine backup fails with "Failed to obtain associated virtual system settings"
Acronis Cyber Backup: virtual machine backup troubleshooting guide
Acronis Cyber Backup: backup fails with "VSS writer has timed out" or "The backup has failed because 'VSS Writer' has timed out during snapshot creation."
Acronis Backup: troubleshooting backup or recovery from Command-line issues
Acronis Cyber Protect: VSS Troubleshooting Guide
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 Cloud, Acronis Cyber Backup: Hyper-V Virtual Machines are Unavailable during Snapshot Creation
Acronis Cyber Protect 15: Backup fails with "Connection to the storage node failed"
Acronis Cyber Backup: backup completes with warning "Link target was not backed up" or "The file is out of backup scope"
Acronis Cyber Protect: Single-Pass Backup of MS SharePoint Server Fails with "Database is already open and can only have one user at a time"
Acronis Cyber Protect: backup fails with "Network disconnected", "The network path was not found" or "Cannot connect to the machine where network share is located"
Acronis products: backup to cloud fails with "Failed to resolve hostname"
Acronis Cyber Backup: activities of host-level backup plans are not shown for protected VM
Acronis Cyber Protect: Troubleshooting Hyper-V snapshot issues
Acronis Cyber Protect, Acronis Cyber Backup: "The activity has failed due to a restart of the service" or "The activity has failed due to an unexpected machine reboot or the backup process was terminated." error
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, Acronis Cyber Backup: backup fails with "VSS writer 'SqlServerWriter' with class ID 'A65FAA63-5EA8-4EBC-9DBD-A0C4DB26912A' has failed to process the snapshot"
Acronis Cyber Backup: backup fails with "The operation has timed out"
Acronis Software: Troubleshooting Scheduled Backup Issues
Acronis Cyber Protect Cloud, Acronis Cyber Backup: Backup fails with "Unknown status"

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