If the logon client cannot connect to the logon agent, particularly in the scenario of offsite logon, then use the tool "clo-handshake" to test if the cause of the problem lies in the network configuration or in the application configuration.
Click here to download the CLO Handshake Tool
You can leave the file in Downloads or move ita it to a different directory. Just make a note of which directory it was moved to.
Open a Command Prompt and CD to the directory into which the CLO Handshake Executable has been placed.
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(where x.x.xx equals the version number of the Handshake tool. In this example, we are using 2.5.3233, however a newer version may become downloadable at a future date.)
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This is followed by the port number 12841
e.g.
(You will specify your own FQDN)
Press Enter
What we are really after is The tool will ping the agent connection...
Press Enter Ctrl+Q then Enter to quit.