Checklists for software errors, setup, and tool workflows.

Fix Command Prompt Proxy Settings 502 Bad Gateway

If you see a 502 bad gateway error when using command prompt tools like curl, npm, or git, the pr...

Fix Windows Update Connection Timeout Due to Firewall

If Windows Update fails with a connection timeout error, the problem is often in your firewall or...

Outlook 404 Not Found Web App: Fixes and Checks

If you're seeing a 404 Not Found error when trying to open Outlook on the web (formerly Outlook W...

Fix Certbot Renew Certificate Not Working

You run certbot renew and nothing happens, or you get an error. Renewal failures oft...

Fix BitLocker 'Cannot Access Drive Permission Denied' Error

Understanding the Error

You see 'Cannot access drive. Permission denied' when trying to o...

Fix Windows Defender Connection Timeout Error 0x80070422

If you see error 0x80070422 when opening Windows Defender or running a scan, the message typicall...