As per the other commenters above, the principal reason for running macOS in virtualized containers is to bypass the need to dual boot a machine to get access to a beta OS for testing software, which as a workflow is cumbersome and in reality completely impractical when also needing to be joining video conferences and conforming to corporate IT security policies. Please provide us with a solution for logging in to the App Store / other iCloud services from macOS VMs on Apple Silicon. I posted the above in this thread 9 months ago. The recent removal of seedutil from macOS requiring to be logged in to an Apple account for access to developer seed beta updates to macOS has now enormously impacted our workflow for automation testing of our EndpointSecurity product. We regularly run integration tests to exercise features of our EndpointSecurity product to validate that We have not introduced regressions in to our code macOS updates (especially beta udpates) haven't changed something that results in previously unexpected behaviour We are now in a position where we're going to have to completely rebuild our Apple Silicon based VMs used for integration testing every time a new beta build is released, this also means having to join said VM to our MDM, and handle any other manual setup tasks required (such as providing user-approval for screenrecording in PPPC so that our integration suite can capture screenshots should any integration tests fail etc) I am enormously frustrated by this. My original request in my post above stands - please, please provide a solution for logging in to iCloud accounts in Apple Silicon based VMs.