The Windows Defender software constantly scans your computer for threats such as spyware that may slow down your computer or try to steal personal information. If the software wasn’t installed properly or is conflicting with other programs running on your machine, Windows Defender may not work correctly. To repair the software you either need to download the latest update available for the program, or you need to completely uninstall and reinstall Windows Defender. Tips Warnings Writer Bio

How to Repair Windows Defender - 30