On a Windows Server 2012 I have a script to backup our databases using service_mgr.

gbak -b -se localhost:service_mgr ....

It works very well, but we have to use it when no user are logged in the server. When we add a task in the Windows scheduler, it does not work. The script runs, but it seems GBak cannot do the backup.

Did anyone tried this with success? Is there any way?