LP360: TCP Channel Protocol Violation

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."

1. Determine the version of LP360 installed on the server machine.
2. Determine the version of LP360 installed on the client machine.
3. If it is determined the two machines are running different versions:
4. 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.
5. 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.

1. Does the LP360 License Server reside on a machine running with Windows Server 2008?
2. If so, then the Microsoft .NET Framework 3.5.1 WCF needs to be activated. See the following article published by Microsoft: http://support.microsoft.com/kb/2027770

1. Determine the TCP Port for the LP360 License Server that was specified during the installation of the authorization file.
2. Using a command prompt determine the TCP Ports that are currently in use. Key-in: netstat -a -n -p TCP
3. Verify that the same TCP Port has been specified for the License checkout on the client machine.
4. Change the TCP Port for the LP360 License Server
5. On the machine hosting the LP360 License Server open the LP360 License Administrator Program
6. Select the Activate tab
7. Check the box for “I have an authorization file and I would like to complete the activation”
8. Browse for the *.AUT file
9. Under License Server Settings change the Port Number
10. Complete Activation
11. Change the Port Number for the client access on the server machine, and on all client machines accessing this same server machine.