Dear All,  We are facing many time the same issue that infopath is not able to connect with my remote server. I have two development machine where one is connecting with sharepoint correctly while the other one is giving me an unknown error ... Once i drill down i found the one development machine has office 2013 32 bit version that connect with the server with out any problem while the infopath 2013 64 bit giving me the error.. I uninstall 64 bit office and than install 32 bit office on another developer machine and after that it will work I hope it will work with you as well Regards 3art Technology Experts http://www.3art.tech