Reset Windows Defender Service to Default Settings
If Windows Defender isn't starting, showing errors, or acting strangely, the service settings may...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Security Not Scanning for Viruses: How to Fix
If Windows Security (formerly Windows Defender) is not scanning for viruses, you may see an error...
Fix OBS Black Screen After Game Capture Setup
You set up a game capture source in OBS Studio, but the preview shows a black screen. The game ru...
Windows Security Invalid Configuration Checklist
You open Windows Security and see a message about an invalid configuration. This usually means a ...
Fix Microsoft Store Download Stuck at 0 Bytes
When you try to download an app or game from the Microsoft Store and the progress bar stays at 0 ...
Fix WinRAR Checksum Error After Update
After updating WinRAR, some users see a "checksum error" when opening archives that worked before...
Topic paths
Quick titles
MongoDB Compass Cannot Connect to localhost:27017 – FixesFix Windows Permission Denied When Installing SoftwareHow to Fix Defender Network Issue Post-UpdateFix Windows Update Connection Refused After Network ResetHow to Fix Windows Defender Real-Time Protection StuckHow to Fix Microsoft Store Updates Not WorkingWindows Security Service Stopped – Antivirus FixHow to Fix Permission Denied in Windows 10 Activation