Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

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...

How to Fix Remote Desktop Authentication Errors

When you see a remote desktop authentication error, it usually means the connection failed becaus...

Fix Windows Defender Service Not Running

If you see "Windows Defender service not running" or a red warning in Security Center, the underl...

Fix OneDrive Sync Error 0x8004de40 on Ubuntu

If you see error 0x8004de40 when syncing OneDrive on Ubuntu, the sync client usually fails to aut...

Fix Windows Terminal Version Mismatch Error Code

You open Windows Terminal and see an error: “Version mismatch” or “Error code: 0x800...

Microsoft Teams Not Connecting to Server: Practical Fixes
When Microsoft Teams won't connect to the server, you typically see a persistent "Reconnecting" m...