Error "The process cannot access the file because it is being used by another process"

When performing a file backup, the following message is received in the backup report:

• [info] YYYY/MM/DD hh:mm:ss [-] Contact your service provider to enable [Volume Shadow Copy] support ... [erro] YYYY/MM/DD hh:mm:ss [New File] File="C:\%path%\Masterlist.xlsx" Error="com.ahsay.afc.io.SharingViolationException: [CreateFileW] (32) The process cannot access the file because it is being used by another process.

To resolve this issue:

1. Go to Backup / Restore > Users, Groups & Policies > Backup User > %backup_user% > User Profile > Backup Client Settings > Add-on Modules.
2. Check if the box beside Volume Shadow Copy is ticked, if not tick the checkbox.
3. Next, go to Backup Set > %backup_set_name% > Others > Volume Shadow Copy.
4. Check if the box beside Enable Windows' Volume Shadow Copy for open file backup is ticked, if not tick the checkbox.
5. Click Save to save the settings.

• For files located on a network folder, you will need to make sure that the files are not being used when the backup runs, or you can create a filter on the backup set to exclude the open files that start with $.