NinjaOne Backup — Troubleshooting
NinjaOne Backup error codes, log reading, VSS/storage/cloud/NAS failures, diagnostics, and restore procedures.
NinjaOne Backup — Log File Locations & How to Read Them
Audience: T2 Use when: NinjaOne console doesn't give you enough detail on a backup failure, or Ni...
NinjaOne Backup — VSS Error 132: Overview & General Triage
Audience: T2 Use when: Backup fails with "VSS Error (132)..." or any error message referencing Vo...
NinjaOne Backup — Error 303: NAS Path Not Configured on Device
Audience: T1 / T2 Use when: Backup pre-flight fails with "Error 303: NAS path not set up on the d...
NinjaOne Backup — Error 360: Cloud Communication Error
Audience: T1 / T2 Use when: Backup fails with "Error 360: Cloud communication error." What This ...
NinjaOne Backup — Error 13: Access Denied (NTFS Permissions)
Audience: T1 / T2 Use when: Backup fails with "Error 13: Missing or insufficient permissions. Acc...
NinjaOne Backup — Error 315: NAS Authentication Failed
Audience: T1 / T2 Use when: Backup fails with "Error 315: Credentials failed when authenticating ...
NinjaOne Backup — File & Folder Restore: Complete Procedure
Audience: T1 / T2 Use when: A user needs a specific file or folder recovered from a NinjaOne back...
NinjaOne Backup — Error Code Master Reference
Audience: T1 / T2 Use when: A backup fails with a numeric error code and you need to identify wha...
NinjaOne Backup — VSS DLL Re-registration & Writer Repair Procedure
Audience: T2 Use when: VSS writers won't recover after a reboot, or the specific VSS error code p...
NinjaOne Backup — Error 305: Unable to Access Local Storage
Audience: T1 / T2 Use when: Backup pre-flight fails with "Error 305: UNABLE_TO_ACCESS_LOCAL_STORA...
NinjaOne Backup — Error 131: Connection Lost During Backup
Audience: T2 Use when: Backup fails with "Error 131: Connect lost during backup operation." What...
NinjaOne Backup — Error 5: EFS-Encrypted File Access Denied
Audience: T2 Use when: Backup fails with "Error 5: Access denied to agent due to EFS file encrypt...
NinjaOne Backup — Error 316: No Host Found for Network Storage
Audience: T1 / T2 Use when: Backup fails with "Error 316: No host found for Network Storage." Wh...
NinjaOne Backup — Image Restore: Bare Metal & Different Hardware Recovery
Audience: T2 / T3 Use when: A server or workstation needs to be restored from an image backup — e...
NinjaOne Backup — Backup Summary Report: Generating & Interpreting
Audience: T1 / T2 Use when: You need to confirm a site's backup health at a glance, review what r...
NinjaOne Backup — Lockhart High CPU/Disk Usage & ReFS Interaction
Audience: T2 Use when: Lockhart.exe is consuming abnormal CPU or disk I/O — slowing the server or...
NinjaOne Backup — Error 307: Low Disk Space Preventing VSS Snapshot
Audience: T1 / T2 Use when: Backup fails with "Error 307: Volume has less than 20% disk space ava...
NinjaOne Backup — Error 306: Snapshot Deleted While Uploading
Audience: T2 Use when: Image backup fails with "Error 306: Snapshot deleted while uploading." Wh...
NinjaOne Backup — Error 10053 & 10054: Connection Aborted / Reset
Audience: T2 Use when: Backup fails with "Error 10053: Connection aborted by host machine" or "Er...
NinjaOne Backup — Error 20: Individual File Deleted from Backup Path
Audience: T1 Use when: Backup fails with "Error 20: Individual file deleted as folder backup path...
NinjaOne Backup — Error 317: Unable to Request Credentials
Audience: T1 / T2 Use when: Backup fails with "Error 317: UNABLE_TO_REQUEST_CREDENTIALS." What T...
NinjaOne Backup — Restore Fails: No Data Available & Device Not in Drop-Down
Audience: T1 / T2 Use when: A restore attempt fails with "No data available," the destination dev...
NinjaOne Backup — Error 327: VSS Writer Error (Image Backup)
Audience: T2 Use when: Image backup fails with "Error 327" referencing a VSS writer failure durin...
NinjaOne Backup — Error 308: Unable to Determine Free Space
Audience: T2 Use when: Backup fails with "Error 308: Unable to determine free space." What This ...
NinjaOne Backup — Network Allowlist & Firewall Requirements
Audience: T2 Use when: Setting up a new site, troubleshooting cloud connectivity errors (360, 131...
NinjaOne Backup — Error 313 & 314: File Not Found / Inconsistent File
Audience: T2 Use when: Backup fails during integrity check with "Error 313: File not found" or "E...
NinjaOne Backup — Mounting an Image to the Cloud for File-Level Recovery
Audience: T2 Use when: You need to recover specific files from an image backup without performing...
NinjaOne Backup — Error 121: Windows Semaphore Timeout
Audience: T1 / T2 Use when: Backup fails with "Error 121" — Windows system error ERROR_SEM_TIMEOU...
NinjaOne Backup — Error 310: Unable to Backup Volume
Audience: T2 Use when: Image backup fails with "Error 310: Unable to back up volume." What This ...
NinjaOne Backup — Error 318: Network Storage Not Defined
Audience: T1 / T2 Use when: Backup pre-flight fails with "Error 318: NAS_NOT_DEFINED." What This...
NinjaOne Backup — Error 311: Integrity Check Failed
Audience: T2 Use when: Backup fails with "Error 311: INTEGRITY_CHECK_TOO_MANY_ERRORS_FAILED." Wh...
NinjaOne Backup — Error 312: Backup Repository Root Folder Missing
Audience: T1 / T2 Use when: Backup fails with "Error 312: Existing NinjaOne Backup repository roo...
NinjaOne Backup — Error 344: NAS Storage Low Space (Warning)
Audience: T1 / T2 Use when: Backup fails with "Error 344: Network Storage Low Space" (warning) — ...
NinjaOne Backup — Error 342: NAS Write Error
Audience: T2 Use when: Backup fails with "Error 342: NAS Write Error." What This Error Means Loc...
NinjaOne Backup — Error 150: Backup Database Error
Audience: T2 Use when: Backup fails with "Error 150: Database Error." What This Error Means Lock...
NinjaOne Backup — SMB Credentials Rejected (System Error 86) Despite Correct Password: LmCompatibilityLevel / NTLMv2
Audience: T1 / T2 Use when: A NinjaOne backup to a NAS fails with a credential/authentication err...