This article contains links to articles about common errors and warnings that may be useful when troubleshooting machine and server (ESE) backups.

004 - VSS troubleshooting and common errors

382 - ESE error: "GC overhead limit exceeded" or "Java heap space"

384 - ESE: files with extended attributes skipped

575 - Windows Image Backup error: "The backup storage location is invalid"

759 - ESE error: "required backup component was not found" (SQL database offline)

859 - ESE: SQL Server default database name conflicts with named instance

882 - Backup errors on SQL Server .ldf files

900 - ESE out of memory

1019 - ESE: Cannot view file contents after restoring 

1115 - Backup fails with "0x800423f0; writer inconsistent snapshot"

1203 - ESE: Error "Could not determine StorageServer from AccountServer"

1220 - ESE: Files are skipped during backup with error "Cloud files are not supported"

1223 - ESE warning: Target referenced by symlink is not selected for backup 

1225 - System state backup presents warning "Unsupported feature detected"

1232 - Error: "Missing entry at ..." appears in logs

1257 - Local copy backup fails with error "Backup failed: newPosition > limit"

1268 - Backup fails because a5backup.properties file is not copied

1280 - Error when backing up many SQL databases on a single machine

1298 - Warning: "Non Daemon Thread"

1410 - Backup fails with error "InstantData stub file - modified"

1418 - Warning: "Could not update session settings"

1425 - Error: "StorageServer and AccountServer are out of sync; no backups are allowed"

1434 - Error: "The filename, directory name, or volume label syntax is incorrect"

1435 - ESE error on macOS: "Operation not permitted"

1445 - ESE: "Warning: Backups to this Account detected from another Backup Client"

1450 - Error: Unknown VSS or COM error

1451 - Warning: Unable to open file ... (The system cannot find the file specified)

1452 - Warning: Failed to read security descriptor for file ... (Access is denied)

1455 - Error: Could not add volume ... to VSS snapshot

1458 - Error: The specified volume is nested too deeply (0x8004232c)

1459 - Error: There is not enough space on the disk

1460 - Error: VSS snapshot creation failed (0x80042306; provider veto)

1463 - Error: "Backup failed: Backup account disabled"

1466 - Error: Could not prepare for snapshot creation ... failed at prepare snapshot

1472 - Could not prepare for snapshot creation ... failed at freeze

1476 - ESE warning: "SQL Server file can be backed up more consistently from the SQL view"

1479 - ESE error: Backup limit exceeded / account over limit 

1507 - Backup failed: Timed out waiting for VSS operation to complete

1533 - Error: VSS snapshot creation failed (0x80042308; object not found)

1534 - Error: VSS snapshot creation failed (0x8004231f; insufficient storage)

1546 - Backup fails with invalid certificate error

1561 - ESE error on macOS: "Resource deadlock avoided"

1562 - Backup fails with warning "Could not retrieve account settings"