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

Nginx 502 Bad Gateway: Troubleshooting Checklist

If you're seeing a 502 Bad Gateway from nginx, it usually means nginx can't reach the upstream se...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix Windows Update Error 0x80070643 in Windows 11

You're trying to install a Windows 11 update, but it fails with error 0x80070643. This usually me...

Microsoft Teams Not Opening After Update: How to Fix

After a Microsoft Teams update, the app may fail to open or get stuck on the loading screen. This...

Windows Activation Stuck on Pending: How to Fix

You're trying to activate Windows, but the status just says "Pending" and never moves. This usual...

Task Scheduler Setup Guide with Step-by-Step Instructions

If you need to automate a repetitive task—like running a script, launching a program, or sending ...