Checklists for software errors, setup, and tool workflows.

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MongoDB Compass Cannot Connect to localhost:27017 – Fixes

You open MongoDB Compass, enter localhost:27017, click Connect, and get an error: “c...

Fix Windows Defender Security Center Not Opening

When you click the Windows Defender Security Center icon or try to open it from Settings, nothing...

Fix 'err tunnel connection failed' on Chrome for Android

You open Chrome on your Android phone and instead of loading a page, you see 'err tunnel connecti...

Fix Windows Terminal Not Working with VPN

If Windows Terminal stops working when your VPN is connected—freezing, failing to launch, or show...

Fix Chrome Profile Port Already Allocated Error

You start Chrome and see an error like "The profile appears to be in use by another Chrome pr...

Fix Windows Terminal 502 Bad Gateway Due to Proxy or Network Settings
You open Windows Terminal and see a '502 Bad Gateway' error when trying to access a remote host o...