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

Fix Windows Activation Error 504 Caused by Firewall Settings

You try to activate Windows and get error 504. This often means your firewall is blocking communi...

How to Clear Windows Terminal Cache and Reset Settings

Windows Terminal can sometimes behave oddly—profiles missing, colors wrong, or it won't start. Of...

Microsoft Teams Authentication Failed: Step-by-Step Checklist

You try to sign in to Microsoft Teams and see an error like “Authentication failed” or “We couldn...

Checklist for GitHub Actions Permission Issues

GitHub Actions often fail with cryptic permission errors. This checklist walks through the most c...

Fix 'Remote Desktop Command Not Found' After Update

Fix Outlook 504 Gateway Timeout by Clearing Cache

If you're seeing a "504 Gateway Timeout" error in Outlook—especially when connecting to Exchange ...