58434: Acronis Cyber Protect, Acronis Cyber Backup: Backup Fails with "Logon failure: unknown user name or bad password"

Last update: 24-08-2021

Symptoms

Backup of a Windows machine fails with error:
Logon failure: unknown user name or bad password.

Cause

Acronis Cyber Backup agent receives this error from Windows while trying to access backup source or target.

Solution

  1. Make sure the credentials (for backup source and/or backup target) you have specified during backup plan creation are correct.
  2. Make sure the user you have specified during backup plan creation can access items you want to back up and/or location where the backup should be stored.
  3. Recreate the backup plan and provide credentials anew.
  4. Contact Acronis Support, if you need help with this issue.

Tags: