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 Offline Installer Troubleshooting Checklist
When you download a Microsoft Store offline installer (an .appxbundle or .msixbundle file) and tr...
Windows Defender Real-Time Protection Won't Turn On: Fixes
You open Windows Security, toggle real-time protection on, but it slides back to off. This is a c...
Fix Microsoft Store Token Expired Error
You open the Microsoft Store and see an error about an expired token. This usually means your aut...
Fix Windows Update Service Error 5 Access Denied
When you try to start the Windows Update service and get error 5: access denied, it usually means...
Fix Windows Terminal Blank Screen After Sleep
If you wake your Windows PC from sleep and find Windows Terminal showing only a black or blank sc...
Topic paths
Quick titles
Task Scheduler Cache Registry Location GuideWindows Search Service Access Denied TroubleshootingClear BitLocker Cache Windows 10 Step-by-StepHow to Resolve Windows Store Error 0x80073cf9Fix Windows Update Hanging at 100% CompleteWindows Defender Connection Refused: How to FixWindows 10 Chrome Offline Installer GuideEnable Windows Search Logging for Troubleshooting Index Issues