Agent failed to process method {ReFs.SetFileIntegrity} with Veeam and Synology DSM 7.0
Here is a small tip regarding an issue I had following the upgrade of a Synology NAS to DSM 7.0. I’m using this NAS as a SMB repository for the backup of my home lab and following the upgrade all my backup failed with the following error : “Agent failed to process method {ReFs.SetFileIntegrity}”
![](https://jeremyverda.net/wp-content/uploads/2021/09/image2021-9-22_15-25-1.png)
To solve this issue I’ve added the following registry key to my Veeam server then restarted the services :
- Path : HKLM\SOFTWARE\Veeam\Veeam Backup and Replication
- Type : DWORD (32-bit) Value
- Name : UseCifsVirtualSynthetic
- Value : 0