I've had an issue with installing Oracle 220.127.116.11 on Windows 2016. I know that is not supported, but the client wanted me to try. I was able to do the basic install, but OCT 2017 PSU refused to cooperate and was reporting "invalid class format". Did anyone here have more luck? I have already asked the client to repurpose the VM as a Windows 2012 server, but I would like to know if there is anything I could have done to solve the problem.