‘The underlying connection was closed: Unable to connect to the remote server‘ error message appears when updating Spitfire.
To test the Update Now connection in the Spitfire Install and Configuration Tool (ICTOOL.exe), enter the following URL in a browser:http://clients.spitfiremanagement.com:3280/sws/main.asmxYou should see a Site Update service page. This is the web site that the ICTOOL.exe connects to when updating your Spitfire application.
You can use a registry setting to force ICTool to use an SSL connection.Add a string value for the key HKEY_LOCAL_MACHINESOFTWARESpitfiresfPMSiConfigName the string SWSURL and give it the value https://clients.spitfiremanagement.com/sws/main.asmx
KBA-01041; Last updated: October 12, 2016 at 13:56 pm;