I have two machines running Quartus Pro 19.1 using a primary license and a companion license. On the primary computer my project builds and a programming file (sof file) is generated.
On the companion computer when I build an identical project I get a message during the Assembler stage stating that I have an unlicensed IP included in my project. The IP in question is a Nios IP that I don't have in my project and as far as I can tell the licenses are identical.
Welcome to INTEL forum. To further investigate could you provide your license.dat file. And for privacy, you can also reply/attach your file in private message.