Checklists for software errors, setup, and tool workflows.

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Fix Windows Defender Not Starting Due to Dependency Conflict

If Windows Defender won't start and you see an error about a dependency service or group failed t...

Fix Windows Search Token Expired & Outlook Not Syncing

You may see a message that your Windows Search token has expired, and Outlook stops syncing. This...

Fix Windows Activation Error After Hardware Change

If you've recently replaced your motherboard, CPU, or other major hardware, you may see a Windows...

Chrome Rate Limit Error: Causes and Fixes

If you see a "rate limit exceeded" or similar error in Chrome, it means you've sent too many requ...

How to Fix Command Prompt Proxy Error

If you get a proxy error in Command Prompt—for example, when running curl, git...

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