Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're running a command-line tool behind a corporate proxy and get a 504 Gateway Timeout

Fixing Chrome Profile Sync Rate Limit Errors
You're using Chrome and suddenly see a message like 'Sync is paused due to a rate limit' or 'Temp...

Fix Microsoft Teams Proxy Error After Update
After a Microsoft Teams update, some users see a proxy error when trying to sign in or connect. T...

Fix npm EACCES Error: Permission Denied on node_modules
You run npm install and get an error like EACCES: permission denied, mkdir '/u...

Fix Windows Activation 504 Gateway Timeout Error
You try to activate Windows, but get a '504 Gateway Timeout' error. This usually means the activa...

Fix OneDrive Error 0x8004de40: Sync Not Working
If you see error code 0x8004de40 when trying to sync files in OneDrive, it usually means the conn...