I share you the solution about how to Activate Apple Services on macOS Sequoia running through a Virtual Machine like Proxmox, ESXi VMWare, VMWare Fusion, UTM, Parallels or etc.
Might be you discovered, if you installed the new operating system of Apple, macOS Sequoia, if you run it through a virtual machine like Proxmox, ESXi VMWare, VMWare Fusion, UTM, Parallels or etc; that Apple included a new hardware restriction, about to avoid to use Apple Services like iCloud, Find my Mac, iCloud File Sync, etc to be used on a Virtual Machine.
They made this in order to only use Apple Services on real mac hardware.
But this is very easily to be fixed, by doing some patches to the kernel on the EFI's config.plist file, that tells the kernel that its not running through a virtual machine, it tells that its running on a physical machine.
I share this video where I show you all the process, in order you can make it work.
Enjoy it!