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 listFix Windows Defender Invalid Configuration Error
You may see an error like “Invalid configuration” when opening Windows Defender or trying to run ...
Fix Windows Update Error 0x80070005 Without Resetting Your PC
Windows Update error 0x80070005 usually means a permissions or ownership issue with update files ...
Fix Windows Search Not Working After Sleep Mode
You wake your PC from sleep, type in the Start menu search bar, and nothing happens—or results ar...
How to Configure Task Scheduler for Daily Tasks
If you need a script or program to run automatically every day, Windows Task Scheduler is the bui...
How to Fix Windows Update Invalid Configuration Error
You try to run Windows Update and get an error saying the configuration is invalid. This usually ...
Topic paths
Quick titles
Fix Windows Defender Permission Denied ErrorEdge Update Network Error FixFix Windows Security Network Connection ProblemsUbuntu VirtualBox 'Kernel Driver Not Installed' SolutionApache Won't Start on Linux: Diagnosis and FixesFix Windows Search Indexer Not WorkingMicrosoft Store DNS Reset GuideWindows Update Migration Folder Access Error Guide