Hi,
We are not able to install .cloud endpoint clients on any of our servers or desktops. I pulled the log info below which looks like it is unable to connect, but we have no restrictions on our firewall and tested from a DMZ.
2014-05-16 10:02:04.859; INF; t=2860; CSPNInstaller::ValidateInstallPackage(660) : Validate using endpoint: https://message.s2.spn.com/CommunicationService/v1/ClientInstall.asmx
2014-05-16 10:02:05.890; INF; t=2860; CActionScriptProcessor::ProcessPayLoads(502) : Payload Count: 1
2014-05-16 10:02:05.890; INF; t=2860; ClientInstallWebService::ValidateInstallPackage2(217) : Not Using Proxy
2014-05-16 10:02:07.156; INF; t=2860; ClientInstallWebService::ValidateInstallPackage2(230) : ValidateInstallPackage result: 25
2014-05-16 10:02:07.156; INF; t=2860; ClientInstallWebService::ValidateInstallPackage(162) : Detected SSL Error - retrying
2014-05-16 10:02:07.171; INF; t=2860; ClientInstallWebService::ValidateInstallPackage2(217) : Not Using Proxy
2014-05-16 10:02:08.062; INF; t=2860; ClientInstallWebService::ValidateInstallPackage2(230) : ValidateInstallPackage result: 25