Upgraded iPhone to iOS 9 and now will not sync saying incompatible version of iTunes. I cannot get the program to update to 12.3 (Win 7 64 bit). Prefer not to install fresh and re-import everything.
iPhone 5s, iOS 9.0.2
Today the separate Quicktime and iTunes updater popped up saying 12.3 ready to be installed. I chose to reboot the computer first because iCloud was also on screen and frozen. Once rebooted, I cannot get the updater back on screen. iTunes still shows 12.1.2 as the current version if you "check for updates" within the program. Will wait patiently for the updater to come back...assume it runs every day or so.
Sounds like Apple Software Update isn't working properly for you. See the further information area of Troubleshooting issues with iTunes for Windows updates for direct links to the current build. Review the rest of the tip if needed.
tt2
Your issue would make a lot more sense if you were running Vista or XP, since Apple officially ended support for those platforms with the release of iTunes 12.2.0 on June 30. If you were running either of those, then you would need to uninstall 12.1.2 and download 12.1.3 for iOS 9 support. But of course 12.3 is the right version for Win 7.
FYI . . . I had this same problem today and I found a way around it . . .
Open Quicktime, Help, Update Existing Software
I did this and it updated my iTunes from 12.1.2 to 12.3
I hope this is helpful!
iTunes says 12.1.2 is current version despite 12.3 available for download
