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

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...

Fix Windows Activation 502 Bad Gateway After Upgrade

After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...

How to Fix Outlook High CPU Usage Caused by Add-ins

If Outlook is using 50% or more of your CPU for no obvious reason, an add-in is often the culprit...

Force Delete a File Locked by Windows Command Prompt

You're trying to delete a file in Windows, but you get an error saying the file is open in 'comma...

Fix Chrome Version Mismatch That Breaks Extensions

You update Chrome, and suddenly some extensions stop working. Or you install an extension, and it...

Fix 'Invalid Configuration Permission Denied' in Command Prompt