Hello, Just bought a new iMac (27"/3.5/18,3) about three weeks ago and get this msg. about updates; I'm clueless. Any suggestions?? Thanks. Richard --- Post Merged, Jan 20, 2019 --- I just remembered that I did change my apple ID recently (I believe it was AFTER I bought the new iMac). Would changing it back to what it was help? Is this even possible? Thanks again.