Connections cannot be established on XenApp/XenDesktop Servers over https.

Event ID 0: An SSL connection could not be established: None of the SSL cipher suites offered TLS_RSA_WITH_RC4_128_SHA, TLS_RSA_WITH_RC4_128_MD5, TLS_RSA_WITH_3DES_EDE_CBC_SHA, TLS_RSA_WITH_AES_128_SHA, TLS_RSA_WITH_AES_256_SHA were accepted by the server. 
This message was reported from the Citrix XML Service at address. 
The specified Citrix XML Service could not be contacted and has been temporarily removed from the list of active services.

Event ID 4003: All the Citrix XML Services configured for farm <FarmName> failed to respond to this XML Service transaction.

Install the following Microsoft update:
KB2292611 - MS14-066: Vulnerability in SChannel could allow remote code execution

Problem Cause