Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you try to sign in to OneDrive and see error code 0x8004de40, the app usually stops syncing....

If you're running Composer and see an error like Fatal error: Allowed memory size of X byte...

Fix Windows Security App Blank White Screen
You open Windows Security and see nothing but a white screen. The app appears to load but no cont...

BitLocker Network Unlock Error 0x80070035 Fix
When BitLocker Network Unlock fails with error 0x80070035 (the network path was not found), the s...

Windows Security Invalid Configuration Checklist
You open Windows Security and see a message about an invalid configuration. This usually means a ...

Fix Chrome 404 Error by Disabling Extensions
If you're seeing a 404 error in Chrome but the page loads fine in another browser, a misbehaving ...