When your lab is built with a Windows-based VM, the image usually has the Administrator user profile. Therefore, usually you will put "Administrator" as the username for the custom image in the resource definition:
If you want Strigo to log into the lab VM using a different user profile, this is what you'll have to pay attention to when creating the Windows image:
The user profile exists:
The user is allowed to connect remotely:
After that, proceed to creating the image for Strigo provisioning as explained here.