0 Windows: How to delete all user profiles automatically?

1. Click Start, type gpedit.msc in the Start Search box, and then click gpedit in the Programs list.
If you are prompted for an administrator password or for confirmation, type the password, or click Continue.
2. Under Computer Configuration, expand Administrative Templates, expand System, and then click User Profiles.
3. In the details pane, double-click Delete user profiles older than a specified number of days on system restart.
4. Close all dialog boxes.
When you reboot the computer/server, all user profiles will be deleted.