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

Fix 'Port Already Allocated' Error in Chrome via Command Line

You start Chrome from the command line and get an error that the port is already allocated. This ...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix Microsoft Store Invalid Configuration Sync Error

You open Microsoft Store and see a message about invalid configuration, or your apps won't sync. ...

How to Fix PowerShell Rate Limit Error 429

If you're using PowerShell to call REST APIs — especially Microsoft Graph, Azure, or GitHub — you...

How to Fix Task Scheduler Token Expired Error

When a scheduled task fails with a 'token expired' error, it usually means the task cannot authen...

How to Fix Windows Security Error 0x80073b01

You may see error 0x80073b01 when opening Windows Security or trying to use its features. It usua...