Recieved Error (23343) in System Center Virtual Machine Manager 2016 (SCVMM) when creating a new Virtual Machine. The process would get to about 85% and then freeze for 60 minutes and give the following error message.
The shut down action on virtual machine 'TESTVM1' timed out in host after waiting for 60 minutes. This could be due to some ongoing operating system updates.
To fix the issue i had to create a new Guest Operating Sytem Profile in the VMM 2016 Library. I then updated the VM template to use this and I could once again create new Virtual Machines.
In my experience here I was using Windows Server 2016 as the VMM server and new VM being created.