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

How to Fix Taskbar Icons Not Loading on Startup

You boot your PC, but the taskbar icons—volume, network, battery, or pinned apps—don't show u...

Fixing Nginx 502 Bad Gateway in Docker: Practical Steps

You set up Nginx as a reverse proxy in Docker, but instead of your app you see a 502 Bad Gateway....

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Fix DNS Probe Finished NXDOMAIN Not Working on WiFi

If you see "DNS_PROBE_FINISHED_NXDOMAIN" in Chrome while connected to WiFi, your browser ...

Error 0x80070080002 Windows Update: Step-by-Step Fix

Error 0x80070002 in Windows Update usually means the update files are missing or corrupted, or th...

Nginx Upstream Connection Refused: Fixing localhost Errors

You set up an nginx reverse proxy to forward requests to a backend service on localhost, but ngin...