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

Fix Windows Activation Version Mismatch After Upgrade

After upgrading Windows—whether from Home to Pro or from an older build to a newer one—you might ...

Command Prompt Port Allocation Troubleshooting Checklist

When a service or application fails to start with a message like "port already in use" or "addres...

WireGuard Handshake Not Completing: Peer Not Responding Fix

You see "handshake did not complete after 5 seconds, retrying" or "peer not responding" in your W...

Windows Terminal Backup & Restore Checklist

After customizing Windows Terminal with profiles, color schemes, and key bindings, losing those s...

How to Free Up a Port in Command Prompt (Windows)

When an application fails to start because a port is already in use, you need to free that port. ...

Fix GitHub Actions Cache Action Permission Denied Error