Software comparisons, alternatives, and tool decision notes.

Fix Windows Security DNS Error Blocking Internet Access

If your internet stops working and you see a Windows Security DNS error, it usually means the DNS...

How to Add PowerShell to System PATH Variable in Windows

If you've installed PowerShell but can't launch it from a Command Prompt or another terminal with...

Fixing Outlook DNS Error: Not Connecting to Server

You open Outlook and see an error: "Cannot connect to your email server" or "Outlook cannot conne...

How to Refresh an OAuth Token in Command Prompt

If you're working with APIs that use OAuth 2.0, you've likely encountered an expired access token...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...

Fix Windows Store Error 0x80073cf9: Clear Cache & Repair

You try to install or update an app from the Microsoft Store, and you get error 0x80073cf9. Usual...