Checklists for software errors, setup, and tool workflows.

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2. Isolate

3. Apply

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Fix Windows Defender Service Not Running

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

Chrome Profile Configuration Troubleshooting Guide

You open Chrome and see a profile error, get a message that your profile can't be loaded, or noti...

Fix Windows Defender Login Loop Not Responding

You open Windows Defender Security Center, but instead of the dashboard you get a spinning circle...

Checklist for Fixing Windows Security Startup Failure

When Windows Security (formerly Windows Defender) fails to start at boot, you may see an error li...

Fix OpenSSL Certificate Errors in Command Prompt

When using OpenSSL in Command Prompt (cmd), you may encounter certificate errors like unabl...

Fix Windows Security Service Stopped Manually Error
If you see "Windows Security service stopped manually" in Event Viewer or your antivirus reports ...