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

Fix Windows Activation Service Unavailable on Windows 10 Pro

If you see the error 'Windows Activation Service Unavailable' on Windows 10 Pro, it usually means...

Fix 'Service Not Found' Error for Task Scheduler on Ubuntu

How to Fix Microsoft Store SSL Certificate Error

You open the Microsoft Store and see an SSL certificate error—something like "A problem with your...

Fix WinSCP Permission Denied Publickey Authentication

When connecting to a remote server with WinSCP using SSH public key authentication, you may see t...

Fix Windows Defender 502 Bad Gateway Permission Denied

If you're seeing a '502 Bad Gateway – Permission Denied' error when using Windows Defender (Micro...

Fix Windows Update 502 Bad Gateway Connection Issue

When Windows Update fails with a "502 Bad Gateway" error, it usually means the update server can'...