VSS

With the Enabled VSS support option Acronis True Image Echo errors out with the "Unable to create volume snapshot" error message when trying to backup a hard disk drive with EISA diagnostic partition

Instructions on how to enable Microsoft native VSS instead of the default Acronis VSS in Acronis Backup & Recovery 10

As a workaround, disable the VSS support in Acronis True Image Echo

Make sure the backup is run under administrator or that you back up without using VSS

Installation of Acronis Product fails with SnapVssProvider Error in MSI log. This article provides information on how to find, identify and resolve typical errors in MSI logs of Acronis software.

Compatibility issue of Acronis True Image with NTBackup

Acronis VSS provider is used to initiate creation of VSS snapshot, but MS VSS service is actually used

The reason is that the backup was created with disabled VSS support

How to collect Volume Shadow Copy Service (Volume Snapshot Service) log files

You either have 1) Windows Server 2008 R2, or 2) Windows Small Business Server 2011, or 3) EFI system partition, or 4) EISA service partition

Instructions on how to enable Microsoft native VSS instead of the default Acronis VSS in Acronis Backup

You are running a single-pass backup of SQL instances that fails with the error. To fix this issue, re-register the VSS service

VSS-Backup fails with "The shadow copy provider had an unexpected error while trying to process the specified operation". To solve this issue, troubleshoot the VSS provider mentioned in the message.

Unlock the partition using diskpart

Introduction

Acronis software may give errors, freeze or produce other undesired effects when there are issues with parts of the computer environment it operates in:

Hardware/Firmware

Disk partitions, file systems

Symptoms

Backup with activated Volume Shadow Copy fails with the following error similar:

The backup has failed because 'VSS Writer' has failed during snapshot creation.

This error can be produced by different VSS writers, see some examples below:

 

This article describes how to resolve and troubleshoot the error "Error creating snapshot" encountered while backing up a physical or virtual machine. Generally following snapshot errors may occur:

While using the VSS backup option to back up complex applications, you may encounter issues with creating volume snapshot/shadow copy. This article provides instructions on how to troubleshoot and resolve such issues.

All conditions must be true:

  1. Act! software and Microsoft SQL Server are installed
  2. Acronis True Image does not create a backup. If you click the red exclamation mark at the center of the backup screen, the following error message is displayed:
    1. Entire PC and disk/partition backups: Unable to create volume snapshot
    2. File and folder backup: Failed to backup file or folder
  3. The last modified log file at C:\ProgramData\Acronis\TrueImageHome\Logs\ti_demon contains the following text: VSS writer 'SqlServerWriter' with class ID 'A65FAA63-5EA8-4EBC-9DBD-A0C4DB26912A' has failed to process the snapshot
  1. You use Acronis Backup 12.5 or Acronis Cyber Cloud
  2. You run a backup of a Microsoft SQL database
  3. Backup fails with the following error:

Problems detected that may cause a VSS snapshot failure. Trailing spaces in the path. To remove the trailing spaces, run the T-SQL command: ALTER DATABASE MODIFY FILE

Backup on Windows XP fails with error "Failed to create volume snapshot" if MS SQL Server is installed.

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