Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Remote Desktop Error 0x204: Connection Failed

When you see "Remote Desktop failed to start" with error 0x204, the connection to the remote comp...

Fix Outlook Authentication Failed Error in Exchange Settings

You open Outlook and see an authentication failed error tied to your Exchange account. The passwo...

MongoDB Authentication Failed Error 18: Causes and Fixes

When you see MongoDB AuthenticationFailed (error code 18), it means the server r...

Fix Windows Search Fails with DNS_PROBE_FINISHED_NO_INTERNET

You type a query into the Windows Search bar, and instead of results, you see “No internet” or a ...

Fix Remote Desktop Invalid Configuration Permission Denied

When you try to connect to a remote desktop and see "invalid configuration permission den...

Fixing Windows Security Proxy Configuration Issues
When Windows Security (formerly Windows Defender Security Center) can't update virus definitions ...