Q: iTunes update 12.3.1 - the installer encountered problems
iTunes tells me that an update is available so I download the package.
Installing starts but I then get an error report telling me that the Windows Installer has encountered problems and cannot complete the installation.
I am using Windows 10 (free upgrade from Windows 7) and I have checked that Windows Installer is up and running.
I have tried both Firefox and Edge browsers for the download but neither makes any difference.
Any help appreciated
iPad, iOS 9.1, Windows 10 on PC
Posted on Nov 3, 2015 6:35 AM
I've run in to same issue, at some point installer just quit and a message "There is a problem with windows installer" rolls back installation and never completes.
I tried several things, uninstalling old iTunes.
Probably, since you've upgraded your PC, still have old Apple components, in particular "Apple Software Update" v2.1 or the like. Uninstall this component from Windows's control panel, instead of using "Uninstall" button (default OS installer, same that the iTunes is using), use "Change", this will execute package's own installer, from that installer dialog, two options appear: 'repair' and 'remove', select remove.
Once this component is removed, just refresh Windows control panel window to make sure "Apple Software Update" doesn't show listed.
Now, proceed to install your latest iTunes installer program.
I hope this helps.
Posted on Nov 4, 2015 12:42 PM