Yeah pretty sure, I have used them on both msdn and other release by murphy78. Works good.Are you sure? Windows 8.1 does not accept Windows 8 key unless you make some changes to the iso or use the windows installation media creation tool (to create the 8.1 iso)
http://www.howtogeek.com/187525/how-to-perform-a-clean-install-of-windows-8.1-with-a-windows-8-key/