
Windows Security Not Opening? Here's How to Fix It
You click the Windows Security icon in the taskbar or try to open it from Settings, but nothing h...
Software troubleshooting desk

You click the Windows Security icon in the taskbar or try to open it from Settings, but nothing h...

If you open Windows Security and see 'Windows Defender Service not running' or it hangs on a load...

When you run a command in Command Prompt and see Access Denied – Error Code 5, i...

When you see the message "Windows activation server is not available" while trying to activate Wi...

If you see an error like "port already in use" or "address already in use" when starting a server...

You open Windows Security and see a message about a version mismatch, or the Security Center serv...