Currently Being ModeratedOct 5, 2012 10:52 PM (in response to mamba5150)
Let's try a standalone Apple Mobile Device Support install. It still might not install, but fingers crossed any error messages will give us a better idea of the underlying cause of why it's not installing under normal conditions.
Download and save a copy of the iTunesSetup.exe (or iTunes64setup.exe) installer file to your hard drive:
Download and install the free trial version of WinRAR:
Right-click the iTunesSetup.exe (or iTunes64setup.exe), and select "Extract to iTunesSetup" (or "Extract to iTunes64Setup"). WinRAR will expand the contents of the file into a folder called "iTunesSetup" (or "iTunes64Setup").
Go into the folder and doubleclick the AppleMobileDeviceSupport.msi (or AppleMobileDeviceSupport64.msi) to do a standalone AMDS install.
(If it offers you the choice to remove or repair, choose "Remove", and if the uninstall goes through successfully, see if you can reinstall by doubleclicking the AppleMobileDeviceSupport.msi again.)
Does it install (or uninstall and then reinstall) properly for you? If so, can you get a normal iTunes install to go through properly now?
If instead you get an error message during the install (or uninstall), let us know what it says. (Precise text, please.)
Currently Being ModeratedOct 9, 2012 10:25 AM (in response to b noir)
Thank you so much for replying to my question. I've been on a work trip and just got home to try to fix my problem. I did everything that you suggested, but to no avail. I got the error message: Error 1920-Service 'Apple Mobile Device' failed to start. Verify that you have sufficient privileges to start system services.
The rest of iTunes installs fine, although when I was checking for errors, I noticed that Bonjour also had an error: Task Scheduling Error:m->NextScheduledEvent21725683.
Thank you so much for all of your time and assistance in this matter. It's just nice to know that someone cares and is willing to help!
Currently Being ModeratedNov 11, 2012 1:14 PM (in response to mamba5150)
It is not simple and I never found an Apple endorsed solution, but this worked for me. Follow the directions very carefully: http://randomwindowstips.wordpress.com/2009/12/08/windows-7-itunes-9-software-is -not-installed/
Currently Being ModeratedApr 18, 2014 8:33 PM (in response to mamba5150)
For those who still have this problem. There's an easy fix to this. Simply download the Mobile Device Support folder, extract it and replace it with the old one. If it doesn't let you replace it, simply rename the old one to anything i.e.(oldfile). Once you have renamed the old one, drag the one you downloaded into C:\Program Files\Common Files\Apple. Then re-run the installation and it should work perfectly.