Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You might see Windows Defender consuming a lot of memory, and then get error code 0x80070002 when...

You start a Windows update, watch the progress bar, and then see: "Configuration failed. ...

Fix Remote Desktop Version Mismatch After Update
After a Windows Update or RDP client update, you may see an error like “The remote computer r...

How to Clear Windows Defender Cache
If Windows Defender (Microsoft Defender Antivirus) is acting up—stuck on an old update, using hig...

Fix Error 0x80070005 Access Denied in Command Prompt
When you try to run a command in Command Prompt and see error 0x80070005 access denied

How to Fix 504 Gateway Timeout in CMD Proxy Setup
You're running a command-line tool behind a corporate proxy and get a 504 Gateway Timeout