Fix 'Windows Security Cannot Connect to Microsoft Defender' Error
When you open Windows Security and see the message 'Windows Security cannot connect to Microsoft ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listTroubleshoot 502 Bad Gateway in Windows Terminal: Checklist
You're using Windows Terminal and suddenly see a 502 Bad Gateway error when tryi...
Fix Edge Browser Not Working After Update
After a Windows or Edge update, the browser may fail to launch, freeze, or display blank pages. T...
How to Fix Task Scheduler Token Expired Without Password
When a scheduled task runs with the setting 'Run whether user is logged on or not', it stores a p...
How to Fix Windows Update Stuck at 100%
You've waited for a Windows update to finish, but it's stuck at 100% for minutes or hours. This i...
How to Fix Windows Security Network Error on Startup
If you see a Windows Security network error every time your PC starts, you're not alone. The erro...
Topic paths
Quick titles
How to Fix PowerShell Module Permission DeniedWindows 10 Update Log File Location GuideHow to Fix 504 Timeout in PowerShell API CallsWindows Update Clean Boot Error: Path Not Found FixHow to Fix Network Path Error 0x80070035 in WindowsUbuntu: Windows Activation Tool Not RespondingFix pip SSL Certificate Error in Python on Windows, macOS, LinuxWindows Security DNS Permission Denied Fix