Fix Windows Security Not Starting After Update
After a Windows update, you might find that Windows Security won't open, or it shows a blank wind...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Virus Scan Slow Performance
If your Windows Security (formerly Windows Defender) virus scan takes forever or slows down your ...
Fix Task Scheduler Connection Timeout Error
If you see a connection timeout error when trying to connect to a remote computer in Task Schedul...
Fix Remote Desktop 404 Error from Missing Web Interface
You connect to your remote desktop gateway, but instead of a login prompt, you get a 404 error. T...
Windows Update Version Mismatch Troubleshooting Checklist
When Windows Update reports a version mismatch, you might see errors like 0x800f0922...
Fix Windows Search Sync Issues with OneDrive
If you notice that Windows Search isn't finding files stored in OneDrive, or search results are m...
Topic paths
Quick titles
Troubleshooting Error 0x80070002 on Windows UpdateOneDrive Not Syncing After Windows Update: How to FixHow to Fix Windows Update Stuck and High CPUHow to Fix Windows Terminal When It Doesn't StartWindows Security Rate Limit Error: Causes and FixesWindows Update Version Mismatch Error FixResolve Windows Search Connection Refused via RegistryPrevent Windows Update Dependency Conflicts on Reboot