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

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

Fix FFmpeg Audio Out of Sync in VLC Playback

You encoded a video with FFmpeg, but when you play it in VLC, the audio drifts out of sync. This ...

SSH Key Permissions and Ownership: A Troubleshooting Checklist

If you're seeing "Permissions 0644 for 'id_rsa' are too open" or "Bad owner or permissions" when ...

Outlook Command Not Found Troubleshooting Checklist

When you see "Outlook command not found" — whether from a macro, a custom button, or a built-in f...

Fix Microsoft Teams 502 Bad Gateway Error by Clearing Cache

If you see a 502 Bad Gateway error in Microsoft Teams, it often means the app's ...

Outlook SSL Certificate Error: Step-by-Step Fix

When Outlook suddenly stops connecting and shows an SSL certificate error, you typically see a me...