Checklists for software errors, setup, and tool workflows.

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Fix Chrome Certificate Error: Invalid Authority on Company Network

When Chrome displays Your connection is not private with NET::ERR_CERT_AUT...

Fix Windows Defender Blocked by Third-Party Antivirus
You open Windows Security and see a yellow warning: "Real-time protection is off. Your device...

Fix Git Clone Connection Timed Out via HTTPS
When cloning a repository over HTTPS, you may see 'Connection timed out' after a long wai...

How to Use Git LFS with GitHub: Setup and Troubleshooting
You're trying to push a large file to a GitHub repository and get a message like this f...

How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Fix Windows 11 Bluetooth Not Connecting: Practical Steps
You try to connect a Bluetooth device—headphones, mouse, keyboard—but Windows 11 either doesn'...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Chrome Certificate Error: Invalid Authority on Company Network

Fix Windows Defender Blocked by Third-Party Antivirus

Fix Git Clone Connection Timed Out via HTTPS

How to Use Git LFS with GitHub: Setup and Troubleshooting

How to Fix Nginx 'Upstream Connection Refused' Error

Fix Windows 11 Bluetooth Not Connecting: Practical Steps

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