Knowledge base for software setup, errors, and daily tool work.

Fix KMS Activation Error: Port 1688 Already in Use

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)...

Fix 'Port Already Allocated' Error in Microsoft Teams

When starting Microsoft Teams, you might see an error like "Port already allocated" or "The proce...

Fix Windows Update Error 0x80070643 Installation Failed

You see error 0x80070643 when trying to install a Windows update, and the setup fails partway thr...

Fix Windows Defender File Locked During Scan

You run a Windows Defender scan and it reports that a file is locked and can't be scanned. This i...

How to Fix Chrome Extensions Not Loading After Update

After a Chrome update, you might find that some or all of your extensions have stopped working—th...