Lightroom comes in two versions, (a.) the Creative Cloud Version which is paid for by a monthly subscription and will get activated by The Adobe Creative Cloud Application Manager.
(b.) The Perpetual License Version which gets activated by manually inserting a 24 numerical serial number. You will need clarify which version you are trying to activate on the 2nd computer.
Both are the same software application but are activated differently.
Thank you for your reply.
I am trying to activate a Creative Cloud Version on my 2nd PC.
Can't figure out how...thanks in advance!
I do not use the Creative Cloud version, however I am aware that you will have to uninstall the Perpetual Licensed version that you presently have installed on the second computer. The link below should provide additional info.
Thank you very much, will check out this link!