Checklists for software errors, setup, and tool workflows.

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Latest checklists

If your Windows Update service is disabled, you'll likely see error messages like "Window...

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Python Command Not Found in CMD but Works in Anaconda
You open Command Prompt, type python, and get 'python' is not recogniz...

Fix Git LFS Authentication Failed on Push
You try to push a repository with Git LFS objects and get an error like Authentication fail...

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

Fix DNS Probe Finished NXDOMAIN After Windows Update
After a Windows update, some users see the error 'DNS_PROBE_FINISHED_NXDOMAIN' in Chrome ...