I'm curious if an answer to this was ever found? I'm getting identical symptoms when trying to restore from disk to Exchange. I'm not sure that there are any drivers to reinstall for a disk device.
I resolved the issue by upgrading the media server from R2 to R3. The only option to do so that I could find was to download the full trial ISO of Backup Exec 2010 R3. It's unfortunate that Liveupdate can automatically upgrade the remote agents to ...
A possibility I've found: this article suggests a version mismatch between the media server and the remote agent could be the culprit:
https://www-secure.symantec.com/connect/forums/backup-exec-2010-agent-trust-has-not-been-established-linux
My medi...
I've been getting the same issue that Ruben has. Since performing an update to about a dozen Remote Agent installations last week, I can no longer connect to them from the media server because of bad credentials. Those very same credentials worked ...