
Windows Security 404 Not Found: Setup and Fix Guide
When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...
Software troubleshooting desk

When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...

When you run an npm command and get 'npm' is not recognized or command not fou...

When you try to start a Remote Desktop session and get an error that port 3389 is already in use,...

You open Windows Search and nothing shows up. Or you check the indexing status and see "Paused" w...

If you uninstalled and reinstalled the Microsoft Store and now see a port error (e.g., 'Port alre...

You might need to stop Windows Search if it's holding port 10243 or another port you need for dev...