Fixing Windows Security Invalid Configuration: Practical Steps
You open Windows Security and see 'Invalid configuration' or the app won't start. This usually ha...
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1. Reproduce
2. Isolate
3. Apply
4. Verify
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View listWindows Security Troubleshooting Guide
Windows Security (formerly Windows Defender) usually runs quietly in the background, but sometime...
Checklist for Troubleshooting Windows Defender Configuration Issues
Windows Defender (now Microsoft Defender Antivirus) sometimes fails to apply settings or behaves ...
Fix Windows Defender Dependency Conflict with Group Policy
You might see an error like 'Windows Defender dependency conflict' or find that Defender won't st...
How to Fix Windows Security Error 0x80070422
You open Windows Security and get error 0x80070422, or see a message that the app can't start. Th...
Fix PuTTY Network Error: Connection Refused on Ubuntu
When you try to connect to an Ubuntu machine using PuTTY and see "Network error: Connection refus...
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