I dont know what is going on, but I get a strange behavior, when I get update warnings on my PC. Almost daily, I get that there a new version of iTunes. It has been v.12.3.2 for quite a while, and when I go through the process, I am told that the update was successful. Then, it check again, and I get that there is a new version of iTunes. Same version as before. I must have updated to v.12.3.2, at least a dozen times. My security software tells me that there is a new version of Quicktime, and, sure enough I get the same iTunes update screen. It got to the point that I am not going to pay any further attention to this nonsense. Reports to Apple have gone unheeded. I have Win10 on both computer and laptop. The laptop has never done this.
UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 SeaMonkey/2.39
A minority may be right, and a majority is always wrong. ~ Henrik Ibsen Win 10 HP Pavillion desktop , 8GB , Avast2016 , Zone Alarm Firewall, Seamonkey 2.46, Firefox 50.1, Thunderbird 45.7, also Toshiba Satellite laptop, 4GB, Win 10, , Chrome 55