ITunes 12.1 update fails

I have been trying to install the update from iTunes 12.0.1 to iTunes 12.1. For some reason the update fails and I seem to be stuck with iTunes 12.0.1 and the app store telling my permanently that I need the update.
I have tried to delete iTunes so that I can download afresh but I get a message iTunes is required by OSX and can not be deleted. I am currently using Yosemite OS.
I have tried repairing file permissions but have had no success in installing this update. Does any one have any idea as to how I can fix this please?

As Peter says, iTunes 12.0.1 is the latest.
Can you post a picture of this message from the App Store?
|the app store telling my permanently that I need the update.

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I tried to update to the most recent itunes, but the update failed and now when I try to open itunes a dialog box pops up and tells me that it can.t open because MSVCR80.dll is missing. I need help!

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Thanks to user turingtest2 for this solution.
Solving MSVCR80 issue and Windows iTunes install issues.
If the above doesn’t do the trick entirely, then use the instructions in the following as it applies to the version of Windows you are using:
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I was told to update iTunes. The update failed. Now I can't open iTunes but get the following messages: The program can't start because MSVCR80.dll is missing from your computer. Try reinstating the program to fix this problem. Then I get iTunes was not

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First try removing and reinstalling all the Apple software using the following or the link within it that applies to XP.
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iPhone, iPad, or iPod touch: Device not recognized in iTunes for Windows

ITune 12.1 update fail by showing invalid signature

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Hey mewinkoko,
If you are having an issue with installing an update to iTunes for Windows, I would suggest that you troubleshoot using the steps in this article -
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Itunes 12.01 update fails

Hmmm What gives?
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Hi Jan-Joost,
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G'day Blaise,
Do you have a Time Machine (or other) backup of your System from just before the update?
If so, then you can boot from the installation DVD, and then select ["Restore System From Backup"|http://docs.info.apple.com/article.html?path=Mac/10.5/en/15638.html].
If not, then you may be forced to Erase your disk and fully reinstall OS X using the installation DVD. Follow [these instructions|http://support.apple.com/kb/HT3910] if you wish to do that. (Note that it will delete your data).
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Click here and follow the instructions.
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Solving MSVCR80 issue and Windows iTunes install issues.
Thanks to user turingtest2 for this solution.
Solving MSVCR80 issue and Windows iTunes install issues.
If the above doesn’t do the trick entirely, then use the instructions in the following as it applies to the version of Windows you are using:
HT1925: Removing and Reinstalling iTunes for Windows XP
HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8
You may be required to boot into safe mode to complete the folder deletion process.

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Read what i say. Put iPhone in DFU mode. Connect with USB cable and restore.
Read:
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ITunes 10.5.3 update failes to install

Window 7 64-bit currently running iTunes10.5.2.11
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Try downloading the package for new installs. the update package failed, but the new install package worked for me without any trouble.
History:
I began this trouble shooting exercise by selecting Download Only through the Apple Update applet. Running the msi manually did not resolve the problem. In fact, it was more frustrating because the download package would disappear after running even though it failed, and I had to download it again. "Cleanup" I suppose. <frown>
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I then followed advice to set permissions for Administrators on registry key HKLM\Software\Micorosoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Com ponents
then reboot and run the update msi again. This also did not resolve the failure.
I downloaded the installer from the Apple download site as though it were a fresh install, and - voila! - it installed correctly and all content and settings were preserved. Hopefully that is all that is needed, not the steps above. Let me know! http://www.apple.com/itunes/download/

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iTunes update failed on both computers. Couldn't find msvcr80.dll, now I have no iTunes at all. Is it iTunes or the computers?

Beth Trachtenberg wrote:
I did NOT move the other folders (Album Artwork, Mobile Applications, Playlists, Previous iTunes Libraries) or files (iTunes Library, iTunes Library Extras, iTunes Library Genius, iTunes Music Library) that are located inside the Music/iTunes folders.
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if you're purchasing content from the iTMS, you could use _*Home Sharing*_ to automatically add new content to all machines on your local network.
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yes.
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*the easy way*
check out TuneRanger.
*the more involved way*
click here for tips/information.
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HT201413 itunes update failed - can't get past "Apple mobile device failed to start"

Any help would be appreciated:
I opened itunes today and got the standard needs-to-update message, so I let it do its thing. Rather than update like usual, it stopped and said there was an error and it failed to finish (didn't copy that one down). I tried clicking on the desktop link, but it said there was something missing and I should reinstall it.
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"Service 'Apple Mobile Device' (Apple Mobile Device) failed to start. Verify that you have sufficient privileges to start system services."
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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
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.
See also HT1925: Removing and Reinstalling iTunes for Windows XP or HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8
Should you get the error iTunes.exe - Entry Point Not Found after the above reinstall then copy QTMovieWin.dll from:
C:\Program Files (x86)\Common Files\Apple\Apple Application Support
and paste into:
C:\Program Files (x86)\iTunes
The above paths would be for a 64-bit machine. Hopefully the same fix with the " (x86)" omitted would work on 32-bit systems with the same error.
tt2

HT1923 My itunes will not update, and i got a message saying that MSVCR80.II is missing from my computer. Try reinstalling. When i try, i get Sevic apple mobile device failed, verify your priveledges with ignore, retry and abort. Still wont download.

My itunes will not update. I get a message that is saying that MSVCR80.II Is missing from your computer, Try reinstalling to fix this problem. So when i tried to reinstall, it says itunes was not installed correctly. Please reinstall error 7 (windows err 126) Then when i tried to reinstall i get this....Service applemovile device failed to start. Verify that you have sufficient priveledges to start service...the I see abort, retry and ignore....when I hit retry, it sill fails and i get the same message again. How do I fix it? Will I lose all my music if I delete it all and reinstall itunes? I haven't tried that yet.

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.
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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

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ITunes 12.1 update fails

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