Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You click Chrome and nothing happens, or you see an error about your profile not opening. This us...

You upload a file to a Teams channel chat or a Files tab, then see a message that the file is loc...

You type timeout /t 5 in Command Prompt, expecting a 5-second pause, but nothing hap...

If you see a proxy error in Windows Defender—often something like "Your IT administrator has limi...

If you spend a lot of time in the Command Prompt, the default black-and-white window with limited...

If you're seeing a 'rate limit exceeded' error in Windows Defender (now Microsoft Defender for En...