We were having backup issues on a server running AppAssure. It would not complete snapshots and error. It would throw the error:
"Timeout getting the VSS writers from [SERVERNAME]"
I restarted all the services. Even re-booted the server without success. Running the commands below got it going again. When I ran vssadmin some of the writers were showing errors. nothing worked until I ran the vShadow commands below. That ended up fixing it and now backups are working once again.
eboot your server).