The following warning message is displayed when attempting to set-up the floating license client:”Successfully completed setting up the floating license client but having trouble contacting the specified License Server. (24284) ERROR: TCP channel protocol violation: expecting preamble.”
The error concerning TCP Channel Protocol violation is likely occurring due to either: incompatible LP360 versions, inaccessible TCP Ports, or a problem relating to Microsoft.NET Framework 3.5.1 WCF and the Windows Server 2008 operating system. Below are three options to try and correct the error.
Option 1: Incompatible LP360 Versions
Determine the version of LP360 installed on the server machine.
Determine the version of LP360 installed on the client machine.
If it is determined the two machines are running different versions:
If the client machine is on a newer version of LP360 versus the server machine, upgrade the server machine to the same version as the client.
If the server machine is on a newer version of LP360 versus the client machine, upgrade the client machine to the same version as the server.
Option 2: Windows Server 2008 or later Operating System
Does the LP360 License Server reside on a machine running with Windows Server 2008?