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

Fix Microsoft Store Error by Changing DNS Settings

If the Microsoft Store won't load, shows error 0x80131500, or fails to download apps, a DNS issue...

How to Fix PowerShell Rate Limit Error 429

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

Fix Chrome Profile Access Denied Without Losing Data

You open Chrome and get an 'Access Denied' or 'Profile Error' message. Your bookmarks, passwords,...

How to Fix 'npm command not found' on Mac

Fix Windows 10 Error 0xc004c003: Invalid Product Key

You see error 0xc004c003 during Windows 10 activation, with a message that the product key is not...

Fix Windows Security High CPU Usage: Practical Steps

If your computer feels sluggish and Task Manager shows that Windows Security (or Antimalware Serv...