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

How to Fix Windows Activation Error 0x8007007b

When you see error 0x8007007b during Windows activation, it usually means the operating system ca...

Fixing Microsoft Teams Rate Limit Error When Sending Messages

SSH Permission Denied (Publickey) on EC2: Setup Fixes

If you're seeing "Permission denied (publickey)" when trying to SSH into an AWS EC2 instance, the...

How to Run Microsoft Store Apps on Ubuntu

If you're trying to run a Microsoft Store app on Ubuntu, you've likely hit a wall. Most Store app...

Windows Defender Real-Time Protection Error 0x80070422 Fix

You try to turn on Windows Defender real-time protection, but you get error 0x80070422. This usua...

Fix Remote Desktop Certificate Error Authentication Failure

You attempt to connect to a remote PC via Remote Desktop (RDP) and see an error like “Authenticat...