Checklists for software errors, setup, and tool workflows.

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...

Fix 'Windows Security Failed to Start Access Denied' Error

You click on Windows Security and see 'Windows Security failed to start. Access denied.' This usu...

Fix Windows Activation Service Not Responding

When you try to activate Windows and see an error that the activation service is not responding, ...

Fix pip SSL Certificate Verify Failed on Company Network

If you're behind a corporate firewall and see SSL: CERTIFICATE_VERIFY_FAILED when ru...

Fix 'Chrome Profile Service Unavailable Permission Denied'

You try to launch Chrome, but get an error: "Profile service unavailable permission denied." It u...

Windows Defender Troubleshooting Checklist

Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...