Checklists for software errors, setup, and tool workflows.

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How to Fix 'PowerShell Command Not Found' in Terminal

When you type a PowerShell command in your terminal and see command not found, it us...

Jupyter Kernel Not Starting in VS Code: Quick Fixes

You open a Jupyter notebook in VS Code, try to run a cell, and the kernel either hangs on "Starti...

Windows Terminal Connection Refused: Troubleshooting Checklist

When Windows Terminal shows 'connection refused', it usually means the terminal couldn't establis...

Fix Windows Activation DNS Error After Network Change

If you recently changed networks (e.g., moved from home to office, switched ISPs, or changed rout...

Fix Windows Defender Proxy Error: Permission Denied

You try to update Windows Defender or run a scan and get an error like "Permission denied"

How to Fix Command Prompt Error 0x80070005 (Access Denied)
When you see error code 0x80070005 in Command Prompt, it usually means 'Access Denied.' This ofte...