SharePoint 2016 > Textbox to enter License key disabled on App Server. Was able to enter key on Web server

Question

We had installed SharePoint 2016 Server Enterprise (Trial) as a farm. Wherein we have 1 App Server and 1 Web server. Both are VMs on same host machine. For making the installation licensed, had gone to Central Admin > Upgrade > and entered the License key on Web server. It worked as expected. However after this when tried to same on App server, found that the license textbox is disabled. We don't know why it is so? Is is that for a farm entering license key on 1 server is enough? Or we have to enter key on both servers? If yes how we can do it?

Have attached snap shot for reference.

Thank you

Answer 1

The license key applies to the farm as a whole. Each server is not individually activated with a key.

That said, you do need a SharePoint server license for each server and the appropriate Std/Std+Ent CALs for each user.