We are running old VB code on a Windows 2012 R2 server.

In the last month the following error has been happening.

      Failure to create CacheObjectConnection.
      Failure in GetClassInfo for CacheObjectConnection

      Factory not connected to server
     Send to Cache' failed

Neither the the code or Cache instance has not changed.

Cache 2017.1.1.111.0

The code:

        Dim bRtn As Boolean
        Dim objCacheObject As Object
        cntr = 1

        Dim factory = New CacheObject.Factory
        Try
            bRtn = factory.Connect(ConnStr)
            objCacheObject = factory.

  The following code in .Net using  CacheObject.dll  version 2016.1.2.206 com library

                  ConnectionString  =  "cn_iptcp:10.56.135.160[1972]:PHDEMO:PHSYSADM:***********" 

                  b = factory.Connect(ConnectionString  )
                  objCacheObject =  factory.Static("CacheObjectConnection")     
                  clist  = factory.GetConnectionList()

  for the above code, b is true and clist is  Local,cn_iptcp:127.0.0.1[1972]: 

Why isn't the 10.56.135.160 in the connection list?  Next the program runs a function written an early version of Cache.