59375: Acronis Backup: logging in to the backup console fails for a user without a password

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Symptoms

  1. You install Acronis Backup (on-premise deployment).
  2. You try to log in to Acronis web console. The user you are trying to log in with is not password-protected. You provide the username and leave password blank.
  3. Login fails with:
    The credentials are incorrect.

Cause

Blank passwords are not accepted.

Solution

In Windows:

  1. Open Windows Registry: Start -> search -> type regedit.exe and press Enter.
  2. Navigate to HKEY_LOCAL_MACHINE\System\Currentcontrolset\Control\Lsa and locate the LimitBlankPasswordUse DWORD.
  3. Set its value to zero:

In Linux, activate the root user and set a password for it.