61714: Acronis Backup: backup fails with "VSS writer 'System Writer' with class ID 'E8132975-6F93-4464-A53E-1050253AE220' has timed out" error

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Symptoms

Backup fails with:

Windows error: (0x800423F2) VSS writer 'System Writer' with class ID 'E8132975-6F93-4464-A53E-1050253AE220' has timed out. This may be caused by too intensive I/O on the machine at the backup start time. Try to re-schedule the backup to some different time. To troubleshoot VSS issues, download and run Acronis VSS Doctor available at https://www.acronis.com/en-us/personal/vss-diagnostic-free-tool/

Full error message:

| error 0x1490003: Backup has failed.
| line: 0x1cd98aae889424f9
| file: e:\235\enterprise\managers\gtob\util\impl\convert_batch_result.cpp:58
| function: Gtob::Backup::ConvertBatchResult
| $module: disk_bundle_vsa64_10330
|
| error 0x10424: Failed to commit operations.
| line: 0xb43e776571144df0
| file: e:\235\processor\diskadm\da_operation.cpp:204
| function: DaProcessor::OperationImpl::Execute
| $module: disk_bundle_vsa64_10330
|
| error 0x70021: Failed to create volume snapshot.
| line: 0x8ba4fa0bac28c10d
| file: e:\235\core\resizer\archive3\backup_partition.cpp:954
| function: resizer::Archive3ImageBuilder::BackupPartitions
| $module: disk_bundle_vsa64_10330
|
| error 0x10c477: All attempts to create a snapshot have failed. To troubleshoot VSS issues, download and run Acronis VSS Doctor available at https://www.acronis.com/en-us/personal/vss-diagnostic-free-tool/
| line: 0x3fec04e376b8a273
| file: e:\235\core\fdisk\win_snapshot.cpp:1405
| function: win_snapshot_core::Lock
| $module: disk_bundle_vsa64_10330
|
| error 0x10c442: Failed to start creating the volume snapshot. To troubleshoot VSS issues, download and run Acronis VSS Doctor available at https://www.acronis.com/en-us/personal/vss-diagnostic-free-tool/
| line: 0x3fec04e376b8a1f4
| file: e:\235\core\fdisk\win_snapshot.cpp:1278
| function: win_snapshot_core::CallSbLock
| $module: disk_bundle_vsa64_10330
|
| error 0x10c482: VSS writer 'System Writer' with class ID 'E8132975-6F93-4464-A53E-1050253AE220' has timed out. This may be caused by too intensive I/O on the machine at the backup start time. Try to re-schedule the backup to some different time. To troubleshoot VSS issues, download and run Acronis VSS Doctor available at https://www.acronis.com/en-us/personal/vss-diagnostic-free-tool/
| line: 0x3fec04e376b89daa
| file: e:\235\core\fdisk\win_snapshot.cpp:180
| function: `anonymous-namespace'::ObtainVSSFailReasonSuberror
| $module: disk_bundle_vsa64_10330
|
| error 0xfff0
| line: 0xbd28fdbd64edb8fb
| file: e:\235\core\common\error.cpp:317
| function: Common::Error::AddHResult
| code: 0x800423f2
| $module: disk_bundle_vsa64_10330

Cause

The issue is caused by too intensive workload on the machine at the backup start time.

A VSS writer is application-specific software that acts to ensure that application data is ready for shadow copy creation. Windows OS includes a set of VSS writers and VSS-aware applications install own VSS writers to the machine. If the workload on the machine is high at the backup time, a VSS writer might not respond in the expected timeframe, that is, reach a timeout. A backup made under these conditions might not be restorable, that is why Acronis software cancels this backup and shows this error message.

Solution

Try to reschedule the backup to a different time, for example, during non-business hours.

Alternatively, you can disable VSS in the backup plan settings. However, use this method only if you do not have VSS-aware applications; disabling VSS might lead to inconsistency of these applications' data in the backup if their transactions have not been completed at the time of taking a snapshot.

More information

To troubleshoot VSS issues, download and run Acronis VSS Doctor available at https://www.acronis.com/en-us/personal/vss-diagnostic-free-tool/

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