
Fix 'Port Already in Use' Error with Windows Defender Firewall
You try to start a local service or application, and it fails with an error like 'port already in...

You try to start a local service or application, and it fails with an error like 'port already in...

You run npm install and get an error like ENOENT: no such file or directory, o...

You're working in a web app and suddenly get a 'token expired' or 'session expired' message. Norm...

You try to turn on Windows Defender real-time protection but get an 'access denied' message. This...

You run a Windows Security (formerly Windows Defender) scan, it reaches 99%, and then… nothing. I...

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