How to Fix Windows Security Not Working
Windows Security (formerly Windows Defender) may fail to open, show a blank page, or refuse to up...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
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View listWindows Defender Troubleshooting Guide for IT Admins
Windows Defender (Microsoft Defender Antivirus) is the default endpoint protection in Windows 10 ...
How to Reinstall the Windows Security App (Microsoft Defender)
If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...
PowerShell Stuck on Executing Policy: Fixes That Work
When you run a PowerShell script and see 'Executing policy' with no progress or error, the execut...
Fix Windows Defender Real-Time Protection Turning Off
If you see a notification that Windows Defender real-time protection is off, or it keeps turning ...
Fix Windows Search Not Working After Update
After a Windows update, you might click the Start menu or press the Windows key and type, only to...
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