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

Fix Windows Defender Version Mismatch with Configuration Tool

You might see a version mismatch warning when opening Windows Defender Security Center or running...

PowerShell Command Not Found but Works in CMD

Docker Desktop WSL Integration Missing: Full Troubleshooting Checklist

If you open Docker Desktop and the WSL 2 backend option is grayed out or missing entirely, you're...

Fix Windows Security Error 0x80073b01: Step-by-Step Guide

You try to open the Windows Security app and get error code 0x80073b01. The app may crash or refu...

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...

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...