This error message only occurs when attempting to install a Floating or ASP license.

If you get this error message, it means either:

The License Manager on the Server has either been moved or has not been installed and activated correctly.

Or that the ISV Server port is blocked. An unblocked ISV port is required so that the license files on the Server can communicate with each other. ISV ServerThe default ISV port is shown in the table when you click the Status command in the RLSA window. Either unblock the port listed in that table or (preferred as this will help prevent issues in the future) set a different port for the ISV as discussed in Changing the port for the ISV Server and in the document Frequently Asked Questions • Floating Licenses.