Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You start a Visual Studio installation or update, and the installer sits on "Preparing files" for...

If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...

When you run a command in Command Prompt and get a proxy error like ERROR: Cannot find prox...

Fix OneDrive 502 Bad Gateway Permission Denied Error
If you see a 502 Bad Gateway or Permission Denied error when us...

Fix 'Access Denied' When Deleting Files via Command Prompt
You try to delete a file using the del command in Command Prompt and get an "Access ...

Fix Outlook Proxy Error After Windows Update
After a Windows update, some users see a proxy error in Outlook—something like “Cannot connect to...