Symptoms

• Backup fails with "Operation failed due to a temporary issue in the cloud storage"
• In the activity details, you see the errors "Object is invalid", "Invalid descriptor":
  
  Example of full error message:

  | error 0x29b001d: Object is invalid
  | linea: 0x5f25c37074a544c0
  | archivo: d:\1108\processor\backup\archive3_file_backup.cpp:879
  | funcion: `anonymous-namespace'::Archive3FileBackupBuilder::Write::<lambda_bb391a40b3dbf97417d4a99e894fa754>::operator ()
  | function: file_backup_run
  | path: /1/AcronisBackup-161152715A.tibx
  | $module: disk_bundle_vsa64_31771
  |
  | error 0xfff0: Invalid descriptor.
  | linea: 0x5f25c37074a544c0
  | archivo: d:\1108\processor\backup\archive3_file_backup.cpp:879
  | funcion: `anonymous-namespace'::Archive3FileBackupBuilder::Write::<lambda_bb391a40b3dbf97417d4a99e894fa754>::operator ()
  | function: NtQueryInformationFile
  | path: \\?\UNC\Acronis\Backup_disk\test.pdf
  | code: 0x80070006
  | $module: disk_bundle_vsa64_31771

   

Cause

An issue with the backup source: it is unavailable, or there are too many operations ongoing at the moment.

Troubleshooting

1. If you're backing up a network share or NAS, make sure there are no frequent disconnections in the network.
2. Another reason is that too many handles are simultaneously opened on the volume where the issue occurs:

• Check the path in the error message
• Re-schedule the backup to another time or exclude the directory from backup

More information

If the steps above didn't help to reveal the problem, contact Acronis Support with reference to this article.