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

Fix Windows Defender DNS Error Not Working

You open Windows Security and see a warning that Windows Defender isn't working, often accompanie...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

Fix 'Outlook File Locked by Windows File Sharing' Error

You try to open Outlook and get an error that the PST or OST file is locked by Windows file shari...

How to Reinstall a Chrome Extension Without Losing Data

When a Chrome extension stops working, you might need to reinstall it. But you don't want to lose...

Fix 'Port Already Allocated' Error When Microsoft Store Won't Open

You try to open the Microsoft Store, but instead of the app window, you see an error message sayi...

Chrome Sync Error After Backup Restore: How to Fix

After restoring a Chrome backup—whether from a system backup, profile copy, or cloud restore—you ...