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

Fix Windows Activation 502 Bad Gateway After Upgrade

After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...

How to Force Close Windows Update Stuck at 100%

If your Windows Update is stuck at 100% for more than 30 minutes, it usually means the finalizati...

How to Fix 'Access Denied' When Setting Windows Security Permissions

When you try to change permissions on a file or folder in Windows, you might see an error like 'A...

Command Prompt Dependency Conflict Troubleshooting Checklist

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 Microsoft Teams Camera Not Working in Meeting

You join a Teams meeting and your video is black, or you get an error that the camera can't be fo...