Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you've recently replaced your motherboard, CPU, or other major hardware, you may see a Windows...

When you start Chrome and see “Your profile could not be opened correctly” or “Chrome profile fai...

If you see a '504 Gateway Timeout' error when opening Windows Security or running a scan, Windows...

You open Chrome on your Mac and see error code 0x0000007b. This usually means Chrome can't start ...

After updating your Java Development Kit (JDK), you might see errors like 'java' is not rec...

How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...