Compute Engine: Qwik Start – WindowsZum Lab
Not saving the username meant that when I tried using RDP directly I didn't know where to find the generated username. Trying to run the Set Password command displayed the dialog which, as a side-effect, showed me the username. It might be worth mentioning that in the steps.
RDP接続しようとしたところ、"The credentials that were provided when connecting to XX.XX.XX.XX did not work. Please enter new credentials."というエラーが出て接続できませんでした。