Was installing a web site in IIS on Windows Server 2012 R2 and using msdeploy.
Came up with:
Registry editing has been disabled by your administrator
Mr Google etc. and there's pages about using gpedit.msc and navigating to "User Config / Admin Templates / System" and finding the entry "Prevent access to registry editing tools" and making it "Not configured" or "Disabled" etc.
Actually, all you need to do is add:
set MSDeployPath=C:\Program Files\IIS\Microsoft Web Deploy V3\
to the DOS settings!
Obviously, you need to install msdeploy beforehand.