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

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking

You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

How to Enable Windows Defender Real-Time Protection in Windows 10

If Windows Defender real-time protection is off, your PC is more vulnerable to malware. You may s...

Fix Windows 11 Blue Screen After Update with Clean Boot

After a Windows 11 update, you might encounter a blue screen error (BSOD) on boot. This often hap...

Docker Build Context Canceled on WSL2: Causes and Fixes

If you're using Docker Desktop with WSL2 backend and your build context gets canceled mid-bui...

How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

How to Handle Python UnicodeDecodeError with errors='ignore'