Follow the steps:

1. Download the attached XenSessionCheck.zip file and extract here in \OpManager\

2. Open the command prompt, go to \OpManager\ and execute VirtualXenExe.bat file by giving xen master details.

For example : VirtualXenExe.bat <xen-masterIp> <username> <password> <port(443)>

3. Check if the customer gets the print "MASTER SESSION ESTABLISHED".  If not take the error screenshot displayed on screen and contact the developer.