Licence server not working anymore after updating windows

Hi,

We have a server 2016 With remote Desktop services. The server is live and everybody can login.

After installing the roles for terminal server everything was great till i update the server.

We get a message that the licence server is given and we have a grace period of 118 days left.

The licence server is activated with client cals.

When we add a collection and add the hostserver we get the error:

Property page: Update RD licensing failed: due to exception The licensing settings can not be set: "Invalid operation"


Has anyone a idea how to solve this ?

Thanks in advanced,

John