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SIRIS, ALTO, and NAS: Error: "VSS quiescence failed"

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Issue

Integrity Verification fails with the error message, "VSS quiescence failed."

Environment

  • Datto SIRIS
  • Datto ALTO
  • Datto NAS

Cause

VSS writers on the production machine are in a failed state.

Resolution

1. Troubleshoot VSS writer errors using the following resources:

2. Take a new backup of the affected agent.

3. Force a new screenshot verification of the agent's latest backup point and observe the result.

Additional Resources 


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