
How to Reinstall the Windows Security Module
If Windows Security won't open, shows errors, or you see "This app has been turned off" messages,...

If Windows Security won't open, shows errors, or you see "This app has been turned off" messages,...

After a Windows update, you might type in the Start menu or taskbar search and see no results—or ...

If Windows Search shows a '404' error or simply returns no results, the search index is likely co...

You try to install or update an app from the Microsoft Store and get a 'permission denied' error....

You open Windows Security and see an error that the service isn't running. Or you get a notificat...

You run composer install or composer update and see something like: