I installed Python 3.6 on my Microsoft server 2016 , running VS 2015 Community. I tried the path to Python Environment, then auto-detect, VS crashes and then when it restarts it will have the "+ Custom" grayed out. Where I then have to remove the key to ungray it as mentioned here  [link](https://stackoverflow.com/questions/40430831/vs-2015-python-environments-greyed-out) 
Trying to put in all the variables for the environment doesn't work as 3.6 isn't even an option in the version drop-box for VS. The only option I see for now until this is fixed is removing 3.6 and installing 3.5