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

Fix Bluetooth Service Not Running in Windows 11

You open Bluetooth settings in Windows 11 and see the toggle is grayed out, or your Bluetooth dev...

Fixing Cloudflare 521 Error After Server Restart

You restart your server, wait for it to come back up, then visit your site—only to see a Cloudfla...

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....

Fix Remote Desktop Error 0x80004005: Credential and Network Checks

When you attempt to connect to a remote PC and see error 0x80004005, the connection usually fails...

Fix Git Push Rejected Non Fast Forward Error