Q: I have tried numerous time to update iTunes to Version 11.1.4.  Each time it has failed. I get the message of "This application has failed to start because MSVCR80.dll was not found".  Also I get a message of "Error 7". Advise please.

1. Uninstall iTunes
2. Reboot
3. Download iTunes
4. Install

For many users at this point in time (iTunes 11.1.4.62) uninstalling iTunes alone is not enough and they may need to undertake further steps...

Go to Control Panel > Add or Remove Programs (Win XP) or Programs and Features (later)

Remove all of these items in the following order:

• iTunes
• Apple Software Update
• Apple Mobile Device Support (if this won't uninstall move on to the next item)
• Bonjour
• Apple Application Support

Reboot, download iTunes, then reinstall, either using an account with administrative rights, or right-clicking the downloaded installer and selecting Run as Administrator.

The uninstall and reinstall process will preserve your iTunes library and settings, but ideally you would back up the library and your other important personal documents and data on a regular basis. See this user tip for a suggested technique.

Please note:

Some users may need to follow all the steps in whichever of the following support documents applies to their system. These include some additional manual file and folder deletions not mentioned above.

HT1925: Removing and Reinstalling iTunes for Windows XP

HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8

tt2

I've been unable to re-install iTunes, despite following your very detailed instructions, thankyou. Do I need to uninstall Quicktime and Mobile me applications too from my laptop? Am somewhat less anxious however, to find that it isn't just me having this issue, but would like to get it fixed as soon as possible.

Thanks

MobileMe is a discontinued service, you should remove that the control altogether. SeeHT2992: MobileMe: Uninstalling the MobileMe Control Panel for Windows for details.

iTunes no longer needs QuickTime except to support some obscure older formats. You can remove now, and reinstall later should you find a need for it.

Did you try the somewhat more involved steps at HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8? these include the manual removal of some of the supporting folders which may be easier to achieve in safe mode.

tt2

Thanks. That worked for me on Win 7 64bit. Had to skip the Mobile Device Support too, but everything worked as described. Didn't need to remove any additional files.

Well, I've removed Mobile Me and QuickTime, and also removed ITunes in the common files. For some reason, it won't allow me to remove the Ipod folder though. Tried to reinstall iTunes again but it failed. Think I need to go to a computer place to get this looked at now as it's all beyond my capabilities. Thankyou for your ideas and help though.

Following on from my previous post this morning, I thought I'd give it one more go, and success. I now have Itunes back, but have lost a lot of my music and playlists etc. So,,,next task is to try and find/reinstate all of that.

Thankyou

See Empty/corrupt library after upgrade/crash.

tt2

Thanks, I found all of my music in the last back up that I'd done, so am in the process of restoring them now. Appreciate your help.

You're welcome.

tt2