
Fix 'Port Already in Use' Error When No Process Shows
You try to launch Chrome or a Chrome-based tool (like Puppeteer, Selenium, or a local dev server)...
Software troubleshooting desk

You try to launch Chrome or a Chrome-based tool (like Puppeteer, Selenium, or a local dev server)...

You open a Windows 11 app or try to install software, and you see an error like "Microsoft Store ...

You open Microsoft Store, and it hangs on a spinning circle or shows a timeout error. This usuall...

If you need Windows Terminal to use a proxy server—for example, behind a corporate firewall or a ...

You see error 0x80072efd when Windows Security tries to check for updates or run a scan. It usual...

After a Windows update, you might see an error that Windows Defender's security token has expired...