Hello guys, so I don’t know if anyone’s had this problem before but for me the WebPlayer cannot seem to find the crossdomain.xml file when I run my game through a HTTPS connection instead of just HTTP where it works perfectly.
So when I run through HTTPS, I get the error: Rejected because no crossdoamin.xml policy file was found BUT works perfect finds the crossdomain…xml file when I run it through just HTTP.
Anyone maybe have any idea on how to fix this??? Would really appreciate it! Thanks!
Same prob, no solution I know of ATM.
http://forum.unity3d.com/threads/123171-Crossdomain.xml-not-found-when-using-HTTPS
Oh wow darn, sucks! Well at least I’m glad that I’m not the only one with this problem lol! Someone hopefully figures this out soon! 
Heya,
I don’t have a solution for you, but I will tell you how we dealt with this problem.
We’re making a multiplayer game, which involved creating our own server.
Basically sockets IO wouldn’t work without the crossdomain policy, so we’ve added a thread to the server which sends the crossdomain policy on request.
Than we just fetch it using the Unity - Scripting API: Security.PrefetchSocketPolicy function.
Hope this helps.
SocketPolicy != Crossdomain.xml