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

How to Fix Windows Defender File Locked Error

When Windows Defender (Microsoft Defender Antivirus) locks a file, you typically see an error lik...

OBS Black Screen Troubleshooting Checklist

You launch OBS Studio, start a scene, and the preview shows a black screen. This is one of the mo...

How to Fix 'Token Expired' Errors in Windows Terminal

If you see 'token expired' in Windows Terminal, it means the authentication token for a service (...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Windows Defender Error 0x80070643 – Version Mismatch

You update Windows Defender and see error code 0x80070643. The update fails, and Defender may dis...

Fix SSL Certificate Errors in Windows 10 Command Prompt

When you run commands like curl, git, or npm in Windows 10...