Error Code Reference
Complete reference of BackupEngine error codes with descriptions and resolution steps.
Error Code Format
BackupEngine error codes follow the format BE-XXXX where the first digit indicates the category. Errors in the 1xxx range relate to authentication, 2xxx to backup operations, 3xxx to restore operations, 4xxx to network issues, 5xxx to storage, and 6xxx to encryption.
💡 Tip
When contacting support, always include the full error code and the error message. You can find these in the agent log or by running
backupengine agent logs --tail 50.Authentication Errors (BE-1xxx)
Authentication error codes
BE-1001 Invalid credentials
The email or password is incorrect.
Resolution: Verify your email and password. Reset password if needed.
BE-1002 MFA verification failed
The TOTP code is incorrect or expired.
Resolution: Ensure your authenticator app's time is synced. Wait for a new code.
BE-1003 Session expired
Your access token has expired and could not be refreshed.
Resolution: Sign in again. If using CLI, run: backupengine auth login
BE-1004 Device not registered
This device has not been registered with your account.
Resolution: Run: backupengine auth register-device
BE-1005 Account locked
Too many failed login attempts. Account locked for 30 minutes.
Resolution: Wait 30 minutes and try again, or contact support.
BE-1006 MFA not configured
MFA is required but has not been set up on this account.
Resolution: Sign in to the portal and configure MFA in Settings → Security.Backup Errors (BE-2xxx)
Backup error codes
BE-2001 Backup set not found
The specified backup set does not exist.
Resolution: Check the name with: backupengine backup-set list
BE-2002 Source path not accessible
A folder in the backup set cannot be read.
Resolution: Verify the folder exists and the agent has read permissions.
BE-2003 File locked by another process
A file could not be read because it is locked.
Resolution: The agent retries automatically. If persistent, close the locking application.
BE-2004 Backup session initialization failed
The server could not create a backup session.
Resolution: Check internet connectivity. Retry after a few minutes.
BE-2005 Chunk upload failed
An encrypted chunk could not be uploaded to storage.
Resolution: Check network connection. The agent retries automatically with backoff.
BE-2006 Backup cancelled by user
The backup was stopped manually.
Resolution: No action needed. Run the backup again when ready.
BE-2007 Ransomware activity detected
Suspicious file changes matching ransomware patterns were found.
Resolution: Scan your system with antivirus. See the Ransomware Protection docs.
BE-2008 Schedule conflict
Two backup sets are scheduled to run at the same time.
Resolution: Adjust schedules so they do not overlap, or enable concurrent backups.Restore Errors (BE-3xxx)
Restore error codes
BE-3001 Restore point not found
The specified point-in-time does not exist in the backup history.
Resolution: List available points: backupengine restore list-points --backup-set <name>
BE-3002 Chunk integrity verification failed
A downloaded chunk failed GCM authentication or hash verification.
Resolution: Retry the download. If persistent, the chunk may be corrupted in storage.
BE-3003 Decryption failed
The chunk could not be decrypted. Wrong passphrase or corrupted key.
Resolution: Verify your encryption passphrase. If you changed it recently, use the previous one.
BE-3004 Destination path not writable
The restore destination directory cannot be written to.
Resolution: Check permissions on the destination folder.
BE-3005 Insufficient disk space
Not enough free space on the destination drive to complete the restore.
Resolution: Free up disk space or choose a different destination.
BE-3006 File version expired
The requested file version has been removed by the retention policy.
Resolution: Choose a version within the retention window.Network and Storage Errors (BE-4xxx / BE-5xxx)
Network and storage error codes
BE-4001 Connection timeout
Could not connect to BackupEngine servers within the timeout period.
Resolution: Check internet connectivity and firewall rules (HTTPS port 443).
BE-4002 DNS resolution failed
Could not resolve api.backupengine.com or storage endpoints.
Resolution: Check DNS settings. Try a public DNS resolver (8.8.8.8 or 1.1.1.1).
BE-4003 Proxy authentication failed
The configured proxy server rejected the agent's credentials.
Resolution: Verify proxy settings in Settings → Network → Proxy.
BE-4004 SSL/TLS certificate error
The server's TLS certificate could not be verified.
Resolution: Check system date/time. Update OS root certificates.
BE-5001 Storage quota exceeded
Your account has reached its storage limit.
Resolution: Delete unused backup sets, reduce retention, or upgrade your plan.
BE-5002 Presigned URL expired
The upload/download URL expired before the transfer completed.
Resolution: The agent requests a new URL automatically. If persistent, check for slow network.
BE-5003 Storage region unavailable
Your selected storage region is experiencing an outage.
Resolution: Wait for the region to recover. Check status.backupengine.com for updates.Encryption Errors (BE-6xxx)
Encryption error codes
BE-6001 Passphrase required
An encryption passphrase is required but was not provided.
Resolution: Enter your passphrase when prompted, or configure it in the agent.
BE-6002 Key derivation failed
Argon2id key derivation failed (usually insufficient memory).
Resolution: Ensure the system has at least 128 MB of free RAM for key derivation.
BE-6003 Encryption key not found
The Data Encryption Key (DEK) could not be retrieved or unwrapped.
Resolution: Verify your passphrase. If the DEK was rotated, ensure you have the current passphrase.
BE-6004 GCM authentication tag mismatch
A chunk failed AES-256-GCM authentication during decryption.
Resolution: The chunk has been modified in storage. Re-download and retry.
BE-6005 Key rotation in progress
A key rotation operation is currently in progress.
Resolution: Wait for the rotation to complete before starting new backups.⚠ Warning
Encryption errors (BE-6xxx) should be taken seriously. If you consistently encounter BE-6003 or BE-6004, it may indicate a security issue. Contact BackupEngine support immediately.