Mobile Device Support install
I recently tried to updated to the current version of iTunes (12.3.0.44) on Windows 10. I originally used the updater, but the install failed. I then downloaded the full 64bit install file, but that failed to install as well.
At this point I started Google'ing... found a few articles talking about the same issue. Went through the steps suggested by Apple to uninstall everything in a specific order and manually remove some folders if they still existed. Ran the "iTunes6464Setup.exe" install again, and it mostly worked this time. During the install I noticed the Apple Mobile Device Support install portion was rolled back. When the installer attempted to start services, it bombed on starting the Mobile Device Service. When I look in my services list, it's not listed. I tried running the "AppleMobileDeviceSupport6464.msi" in the "...Local > Apple > Apple Software Update" folder, but that fails with no specifics too. It doesn't let me use the "Repair" option because it's not installed.
After about 2 hours of troubleshooting this, I'm at a dead end. Any direction or help would be appreciated. I've tried all of the obvious troubleshooting stuff at this point.
I'm unable to update my iPad to iOS 9 until I resolve this issue because it doesn't have enough free space to update over WiFi.