Delete Live OneCare backup folder in Vista

Problem: You reinstalled Live OneCare, or you start using v2 beta, and want to delete your old backup folder, but you can’t.

This is a permission problem, that maybe you can solve with cacls with command line:

cacls “:” /t /g administrators:F 

Sample:
cacls “F:Windows OneCare BackupYourComputerName” /t /g administrators:F
Do NOT put a  at the end of the path.

You’ll get a message “Are you sure(Y/N)?”

This will strip the permissions from the folder and you should be able to delete it.

Another solution found on the Windows Live OneCare Forum :

• Under Computer, double-click the disk letter that corresponds to your hard disk.
• Right-click the Windows Live OneCare folder, and then click Properties.
• On the Security tab, under Groups or user names, click either Administrators or your user name.
• Click on Edit
• Next to Full Control, select the Allow check box, and then click Apply.
• In the Windows Live OneCare folder, select the backup set folder, and then press DELETE.