0x8004231F — VSS insufficient storage
Domain: BackupPriority: High
What does this error mean?
The storage available for VSS shadow copies is insufficient.
Likely causes
- The volume has too little free space
- Shadow storage is undersized
- Existing shadow copies consume the configured quota
Checks and resolution
- Check free space on the protected and shadow-storage volumes.
- Run vssadmin list shadowstorage.
- Review existing shadow copies and configured limits.
- Increase capacity or shadow-storage limits when appropriate, then retest.
Precaution: Do not delete restore points or shadow copies without confirming the retention and recovery impact.
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