Hi johnny121,

please let me add a question: which hypervisor are you using? KVM, Xen?

Generally, I've not come across any special settings required for this form of live migration (but I'm not usually dealing with MS Windows Servers VMs). But since we have few information on the actual VM environment, please allow me to mention that you'll need to consider any external resources, those need to support the migration. Like providing proper network access, same/similar levels of CPUs, external devices that are attached to the VM etc.

Weirdest problem I can currently think of would be some license-checker that verifies the CPU ID and isn't prepared for changes