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

How to Fix npm Run Build Failed Error

If you see "npm run build" fail with a generic error message, you're not alone. The i...

How to Enable Bluetooth Service in Windows 11

If Bluetooth suddenly stops working in Windows 11—the icon disappears, devices won't pair, or...

Fixing NGINX 502 Bad Gateway in Docker Containers

When running NGINX as a reverse proxy in Docker, a 502 Bad Gateway error usually means NGINX cann...

Fix Windows Update Service Not Running with DISM Restore Health

You try to run DISM /Online /Cleanup-Image /RestoreHealth and get an error saying th...

Fix Nginx Upstream Connection Refused in Proxy Pass