Checklists for software errors, setup, and tool workflows.

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Fix 'Windows Defender Firewall Has Blocked' Error

You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...

Fix Microsoft Teams SSL Certificate Expired Error

You open Microsoft Teams and see a warning that the SSL certificate has expired. The app may fail...

Fix Task Scheduler Port 80 Already Allocated Error

When you see "unable to bind to port 80 already allocated" in Task Scheduler, it means another pr...

How to Fix VS Code Terminal 'Permission Denied' in PowerShell

When you open the integrated terminal in VS Code and run PowerShell commands, you might see a 'pe...

How to Fix MySQL Connection Refused and Permission Denied Errors

When you see ERROR 2003 (HY000): Can't connect to MySQL server on 'host' (111 Connection re...

Set Windows Update Service to Run as Local System Account
If Windows Update fails with errors like 0x80070422 or the service won't start, the service might...