Hello,
Follow the steps in the technote given below:
Title:Backup Exec Remote Agent service stops during a backup and a "Faulting application beremote.exe, version 9.1.4691.35, faulting module bedsnt5.dll, version 9.1.4691.20" error is logged in the Application event log.
http://support.veritas.com/docs/278033
If the issue persists, revert to the forums.
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Regards.