
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,...

If you need to run Windows-specific security features—like Windows Defender, Windows Firewall, or...

You open Windows Security and see "Connection refused" or "Something went wrong. Try reopening Wi...

If Outlook is using 30% or more CPU for extended periods, your system slows down and battery drai...

You installed a new antivirus program, and now Windows Update won't run. The service might be dis...

When launching Google Chrome on Windows 10, you might see an error saying 'Your profile could not...