While researching the problem, I came across this page (https://social.technet.microsoft.com/Forums/en-US/312cffad-b601-40be-a34b-073ee515cfd4/having-the-error-0x80070569-when-adding-new-vm-on-hyper-v).
I figured it couldn't hurt so I ran a "gpupdate /force" and it worked.
I was able to return to my starting position and even complete the original goal of adding more storage.
Hope this helps if anyone encounters a similar problem in the future.