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Knowledge Base

Restoration of Plesk backup stored on external FTP server fails: Global server security settings prohibits restore from unsigned or modified backups

 
backupbackup managerbackup restore migrationgoplesk backup

Symptoms

Restoration of the backups created on the Plesk server and saved at external FTP fails with the error:

Global server security settings prohibit restore from unsigned or modified backups. You can not restore from it, except your service provider explicitly allows it.

Cause

The hash of the files stored in the FTP server change every time it's downloaded/uploaded: after upload and download back from FTP server with an FTP client, md5size changes.
Files uploaded to external FTP are being modified, as a result, once they are downloaded back to Plesk checksum does not match and the backup is identified as "modified".

Resolution

Contact external FTP vendor to check why the files uploaded to the remote FTP storage are being modified.

You may also use the following workaround:

Workaround

  1. Log in to the Plesk.

  2. Go to the Tools & Settings > Backup Manager > <backup_file>.

  3. Choose the option Restore this backup despite the fact that it does not have a valid signature and proceed with the restoration:

     

    Ekran Resmi 2024-01-23 12.15.33.png

Note: for resellers and clients, this option can be enabled in panel.ini

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