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

Fix Windows Activation Sync Issue Between Windows and Ubuntu

If you dual-boot Windows and Ubuntu and suddenly see a “Windows isn’t activated” message, the iss...

Fixing Nginx Permission Denied for Upstream Unix Socket

If you see connect() to unix:/var/run/php-fpm.sock failed (13: Permission denied) in...

Fix Get-ChildItem Access Denied Errors in PowerShell

When you run Get-ChildItem in PowerShell and hit an "Access Denied" error, it usuall...

Fix Windows Activation Error: DNS Name Does Not Exist

When you try to activate Windows and see an error that the DNS name does not exist, it usually me...

Chrome Remote Desktop Black Screen After Connection: Fixes

You connect to a remote computer via Chrome Remote Desktop, but the screen stays black. The conne...

How to Resolve Python Dependency Conflicts in Command Prompt

Understanding the Symptom

You're working in Command Prompt on Windows, trying to install ...