One of my colleagues who had developed sandbox solution in VS 2012 and he tries to install it on Site Page. Unfortunately, the received error message was "SharePoint 2013 Error – An unknown exception occurred while executing a sandboxed code solution request in the worker process."
There are so many resolution found on the web. But the one thing that solves our problem is "SharePoint 2013 does not support installation on to a domain controller ".
So we have asked our admin team to install domain controller separately on the SharePoint foundation server .
Happy Share Pointing :-)