
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,...
Software troubleshooting desk

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

If you see "authentication failed" or "password incorrect" when trying to connect Outlook (Micros...

If you notice that Windows Security (formerly Windows Defender) is using a lot of memory—sometime...

You might see a “Windows Update token expired” error when checking for updates, often after a lon...

When you see a dependency conflict in the command prompt while running a Java application, it usu...

You may see an error like "Windows Defender can't start because a dependency service is not runni...