Checklists for software errors, setup, and tool workflows.

How to Fix Windows Defender Service Not Running

If you see a message that Windows Defender is not running or the security center shows it's off, ...

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 Fix SSH Permission Denied (Publickey) on Git Push

You try to push a commit and see: Permission denied (publickey). The push fails. Thi...

Fix VSCode Extension Host Terminated Error Code 0

What does this error mean?

When you see 'Extension host terminated unexpectedly with erro...

Fixing Microsoft Teams Rate Limit Errors in Graph API

When working with Microsoft Teams via Graph API, you may encounter HTTP 429 or similar rate limit...

Fix Remote Desktop Backup Restore Missing Files Error

You run a remote desktop backup restore and some files don't reappear. This is a common frustrati...