How to Resolve Event ID 2034 Application Log MSExchangeRep1

Event Type: Error
Event Source: MSExchangeRepl
Event Category: Exchange VSS Writer
Event ID: 2034
Date: xxx
Time: xxx
User: N/A
Computer: xxxxxx
The Microsoft Exchange Replication Service VSS writer (instance xxxxxx) failed with error code FFFFFFFC when processing the backup completion event.

Restart "Microsoft Exchange Replication Service" on the passive node and see if that resolves the issue.
If problem persists, try switching protection to current active node.