How To Resolve VSS Writer Errors  (VShadow)



1) Restart the exchange information store and replication service.
2) Ensure all vss writers are healthy. vssadmin list writers
3) Ensure that if you do a get-mailboxDatabase -status | Fl *backup* that backup in progress shows as false.

Scenario 1: Failed VSS Writers

  • There are instances when backups are failing due to an agent’s VSS writers being in a failed state, but it is impossible or not desirable to restart the server until at least after business hours.

Scenario 2: VSS Writers Not Started

  • There may also be a writer that is not running and needs to be. Running the command vssadmin list writers will only show a list of writers that are currently started


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Contributer and Author Enterprise Communications Engineer Hi Epic

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