SecurityException: No valid crossdomain policy available to allow access

Questions & Answers
1

I am getting

SecurityException: No valid crossdomain policy available to allow access

When i am trying to call a webservice in Unity3D 3.5 version but the same code was working in Unity3d 4.0 version, below is the code.

var www : WWW = new WWW ("webservice");
		yield www;
		 
	    var dataString = www.text;

I have already googled and found this link which explains that this has been implemented in version 3.0, is this has been revoked in version 4.
http://docs.unity3d.com/Documentation/Manual/SecuritySandbox.html

Please let me know how can i override this work on development enviornment

2

The security policy is the same between versions 3.x and 4.x. To connect to a “remote” machine you’ll need to have a crossdomain.xml file on the remote machine, as is mentioned in the link you posted to the docs. The exception you get says this xml file could not be fetched.