Full Backup Scheme Not Deleting Previous Backups

I am running a daily backup on Windows 10 backing up to an external USB drive.  The drive has room for three backups with room to spare.  I have set the number of backups to retain at 2, but the software is not deleting old backups at all.  As long as there is space on the drive, the backup runs successfully.  I currently have three backups on the drive, and if it runs tonight it will fail due to lack of space unless I manually delete the oldest backup.


  • Did you tick the option "Create a full backup and always retain it before performing the scheme"?
  • I've tried it with and without the option ticked.
  • Please create a new task without that option ticked.
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