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

How to Fix Windows Security DNS Error 0x800704cf

You might see error 0x800704cf when opening Windows Security or trying to update Windows Defender...

How to Break a Microsoft Teams Login Loop

You click Sign In, enter your credentials, and then Teams loops back to the sign‑in screen. This ...

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...

Resolve 502 Bad Gateway Using Command Line Tools

A 502 Bad Gateway error means a server acting as a gateway or proxy received an invalid response ...

Docker Compose Env File Not Found: Troubleshooting Checklist

Fix Task Scheduler Certificate Errors When Tasks Don't Run

You set up a scheduled task in Windows Task Scheduler, but it never runs. When you check the task...