Support for Windows Server 2016 Hyper-V Production Checkpoints for Site System VMs
It’s not possible to use the new Production Checkpoint Feature of Windows Server 2016 Hyper-V with VMs that are running a Configuration Manager Site System role. The Checkpoint creation fails.
To enable modern host-based backup like DPM 2016, it is necessary that ConfigMgr. Fully supports this Hyper-V feature.
Not sure if its due to an OS Update or Server 2019, but I recently tried it on Hyper-V 2019 and it worked fine (SCCM 1810 installed on Server 2016 VM).
Sebastian Reitter commented
I'm with you Stefan!
I learned it the hard way. Now I have a customer with "supported" version of SCCM (made an Upgrade from 1606 and Upgrade from OS 2008R2 to 2012R2), but he cannot back up it anymore the way he used to have. Now he is upset, and thinks he should have run the "no longer supported" but working configuration on OS 2008R2 on the Guest VM, because Production Checkpoints worked there.
And I cannot recommend my VMware Customers to Migrate to HyperV, because some things still don't work :)