Checklists for software errors, setup, and tool workflows.

Fix Windows Activation Error 504 Caused by Firewall Settings

You try to activate Windows and get error 504. This often means your firewall is blocking communi...

How to Fix Chrome Browser Proxy Error (ERR_PROXY_CONNECTION_FAILED)

If Chrome shows "ERR_PROXY_CONNECTION_FAILED" or similar proxy error, it usually means the browse...

Fix PowerShell Token Expired Error 401

If you're seeing a 401 status code with a message like "token expired" in PowerShell, it usually ...

How to Reset Windows Terminal to Default Settings

Windows Terminal sometimes gets stuck with misconfigured profiles, broken color schemes, or start...

Fix Microsoft Teams Audio Not Working on Mac

You join a meeting in Microsoft Teams on your Mac, but no one can hear you, or you can't hear the...

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...