Checklists for software errors, setup, and tool workflows.

How to Fix Windows Defender That Keeps Stopping and Starting

If you notice Windows Defender (Microsoft Defender Antivirus) repeatedly stopping and restarting,...

Fixing Nginx Permission Denied Error (Code 13)

If your Nginx server returns a 403 Forbidden error with message Permission denied (e...

Nginx 502 Bad Gateway: Troubleshooting Checklist

If you're seeing a 502 Bad Gateway from nginx, it usually means nginx can't reach the upstream se...

Fix Windows Update SSL Certificate Error 0x80072f0d

You see error 0x80072f0d when checking for Windows updates. The system cannot verify the update s...

Fix Git Clone Permission Denied (publickey) on Bitbucket

You try to clone a Bitbucket repository and see:

Permission denied (publickey).
fatal: Co...

Fix Windows Defender 404 Not Found Error on Windows 10

You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...