You would think I could find an answer to this question after a quick search, but I can't. I have a current Azure server running Windows 2012 and I want to upgraded it to R2. I have seen about 50 sets of instructions, but they are not accurate. I saw this link - msdn.microsoft.com/en-us/library/windowsazure/gg433101.aspx, but I don't have the option to choose Stage or Production (#3, probably because I don't have a Staging site), but most importanly, I do not have an option to choose CONFIGURE (#4). This does not exist.
I also say this link - msdn.microsoft.com/en-us/library/windowsazure/gg456324.aspx, but where is the .cscfg file to open? It's not on the Guest OS or the portal, so I have no idea where to find this file.
It also seems odd that you would have to set VM to upgrade from the Cloud Services tab, and not the Virtual Machine tab, so maybe I'm missing something... Even so, it shouldn't be this difficult to find an answer to such an easy task.