Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
No dippy... he's not talking about "internet usage" at all and how you got that from his comment is beyond me. What he means is that you can only register products to an MS account so many times - I believe the limit is 20. The answer to his question is that you need to create another MS account to register the software installs beyond that to. None of this solves the original problem and reading through the 47 pages now of replies it amazes me how some of you that think you are answering the question and simply don't get what was being asked in the first place... and then you argue the point as though the other 85% of the people on here all having the same problem don't know what they're talking about.
The bottom line is that this is ridiculous what MS has done and it's simply meant to push a subscription service off on people that many don't want. Also, gawd forbid you try and install another Office product (like Visio) afterward from an online purchase and install from an ISO/disc - those use an MSI installer and it will not install along side the existing Office products because they used "Click To Run" installers and the two are not compatible. A work around (which I just had to do for someone today on one of our older laptops coincidentally) is to use the MS Office Deployment Tool after hacking the config.xml file a bit.
For my company we eventually started buying Volume License versions. With those we can install Office from a disc (ISO) like the good old days, enter the key and wahlah... no MS account needing registered to it! It's literally solved all of our problems. Future additional products (Visio, Project, etc.) also install with no issue either.