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

Fix Windows Activation Failed to Start Command Line Repair Tool

When Windows activation fails, you might see an error that the command line repair tool cannot st...

Fix Windows Activation 502 Bad Gateway Firewall Issues

When you try to activate Windows and see a 502 Bad Gateway error, it often point...

Ubuntu Windows Security Compatibility Troubleshooting Guide

If you run both Ubuntu and Windows on the same machine—either in a dual-boot configuration or thr...

Fix Windows Security Authentication Error 0x80070035

Fix Microsoft Store Startup Disabled in Task Manager

If you open Task Manager and find that Microsoft Store's startup status is disabled, you may expe...

Fix Nginx 502 Bad Gateway in Docker Containers

You're running an Nginx container in Docker, but instead of your app, you see a 502 Bad Gateway e...