Proxmox backups: “guest-fsfreeze-freeze has been disabled (command not allowed)” after qemu-guest-agent update

Hey team, I'm following up on issue #3286.

We previously saw VSS errors in Windows Event Viewer. After updating to a newer qemu-guest-agent version (QEMU Guest Agent 110.1.0), those Windows Event Viewer errors are no longer present.

However, during backups we now see this Proxmox log message:

"unable to freeze guest fs - Command guest-fsfreeze-freeze has been disabled: the command is not allowed"

Before taking a snapshot in Proxmox, I run these commands to confirm the QEMU Guest Agent is responding: • qm guest ping • qm guest cmd fsfreeze-freeze • qm guest cmd fsfreeze-thaw

At the same timestamp in Windows Event Viewer, qemu-ga shows entries like:

• guest-fsfreeze-freeze called

• Writer completes (e.g., MSMQ: “backup completed successfully”)

• guest-fsfreeze-thaw called

• guest-ping called

• guest-fsfreeze-freeze called

• guest-fsfreeze-thaw called

• Writer completes (e.g., MSMQ: “backup completed successfully”)

Backups still complete successfully. I’m mainly checking because one of our SQL servers experienced corruption of the SQL database itself, not a whole server.

Has anyone seen this behavior, and is there a known fix or resolution for the Proxmox “command is not allowed” freeze message?

Thanks!