Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Microsoft Teams Service Unavailable After Update

After a Teams update, you might see a 'Service Unavailable' error when trying to sign in or use t...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

When you type MpCmdRun or Windows Defender in Command Prompt and see

Fix Microsoft Teams Startup Folder Not Working

If you have added Microsoft Teams to your Windows startup folder but it doesn't launch automatica...

Fix Task Scheduler 502 Bad Gateway Not Working

If you see a 502 Bad Gateway error when Task Scheduler runs a task that hits a web service or IIS...

Fix Microsoft Teams 'Port Already Allocated' Error by Clearing Cache

You launch Microsoft Teams and get an error like "Port already allocated" or "Port 8...

Fix Windows Activation slmgr Permission Denied Error
When you try to activate Windows using the Software License Manager (slmgr) command-line tool, yo...