I have a software vendor supplied 2019 Server virtual, with a very simple one partition setup. Unlike many of similar questions I've come across while searching, this one does not have recovery partition at the end. I grew the disk in VMWare by 100GiB, but Disk Management refuses to grow the C: -partition into the newly added space.
I have not previously encountered a situation where free adjacent space was not usable for growing existing partitions. Is there anything else that would be preventing me from extending it?