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

Fix OBS Black Screen but Audio Works: Step-by-Step Guide

If OBS Studio shows a black screen in your source preview or stream but audio is working fine, yo...

Fix Command Prompt Backup Fails with Access Denied

When you run a backup command in Command Prompt and get an 'Access Denied' error, it usually mean...

Fix Windows Defender Access Denied in Safe Mode

You may see an 'Access Denied' error when trying to open Windows Defender in Safe Mode. This typi...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Fix Windows 11 Activation Error 0xc004c003

If you see error 0xc004c003 when trying to activate Windows 11, it usually means the activation s...

Fix pnpm Store Permission Denied on Mac

If you're seeing a 'permission denied' error when running pnpm commands on your Mac, it's usually...