Fix Windows Defender 404 Not Found After Update
After installing a recent Windows update, some users find that Windows Defender is missing or sho...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listMicrosoft Store Performance Issues Checklist
If the Microsoft Store is loading slowly, failing to download apps, or freezing, the problem is o...
How to Fix Remote Desktop Error Code 0x4
When you see Remote Desktop error code 0x4, it usually means the connection failed just after the...
Fix Outlook Network Error Permission Denied
You try to send or receive mail in Outlook, and get a network error saying 'permission denied'. T...
Fix Chrome Profile Access Denied Without Losing Data
You open Chrome and get an 'Access Denied' or 'Profile Error' message. Your bookmarks, passwords,...
Fix 'Flush DNS Permission Denied' Error in CMD
When you run ipconfig /flushdns in Command Prompt and see 'Access Denied' or 'Permis...
Topic paths
Quick titles
Windows Defender Connection Refused: Fix Error 0x80070005Fix Windows Terminal Connection Refused After UpdateFix Microsoft Store Error 0x80073cf0 After ResetHow to Fix Update Error 0x800f0831 with Metered NetworkMicrosoft Teams Network Connection TroubleshootingResolve Chrome Profile Missing on UbuntuFix Windows Search Network Error and Sync IssuesFix 'Windows Activation Command Not Found in CMD' Error