ITunes update failed to reinstall on 64-bit Windows 7 Home Premium

Never had problems before with iTunes update. I never had to do anything besides accepting the agreement, followed the prompts, and clicked "Finish" at the end of the installation. But the update that came 3 days ago failed to install, with a message to get the 64-bit version of iTunes even though iTunes have always installed to the same 64-bit OS computer. After countless hours of uninstalling and reinstalling, and registry clean up, I'm now coming up at 2 consecutive reinstallations with this error message:
Could not open key:
UNKNOWN\Components\32A7D634EB632D11CABB00087CCFBB48\C09E34DBD62CDBC6EB11CA. Verify that you have sufficient access to that key, or contact your support personnel.
I have read other postings with identical error message but no answers either here or on the Apple's forum site. I will appreciate any help, workaround or whatever.
Thanks.

I also face the same problem installing it on my Window 7 Professional. Have you found an answer to this? Thanks.

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After an iTunes update failed to install iTunes won't open and I get lthe folloowing error messages. Program can't start because MSVCR80.dll is missing, and iTunes not installed correctly. please reinstall iTunes. Error 7( windows errpr 126)

After an iTunes update failed to install, iTunes won't open and I get the following two windows. Program can't start because MSVCR80.dll is missing from your computer, and iTunes not installed correctly. Please reinstall iTunes. Error 7 (windows error 126) When I reinstall I get the same messages and ITunes won't open.

Click here and follow the instructions.
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HT201210 Itunes update failed to install and now Itunes won't run

Itunes update failed to install and now Itunes won't run

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
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Since a few weeks all my iTunes Updates fail to install. After the installation trial, the previous installation is damaged – a service is missing.

Since a few weeks all my iTunes Updates fail to install. After the installation trial, the previous installation is damaged – a service is missing :
To fix this I have to deinstall all components of Apple Software in exact order as you reveal on your web site. Than reinstall iTunes from Scratch.
I am using Windos 7 64 bit Professional German edition.

Hi,
to see the cause of Windows 8 update failures, we must look for error messages in the following log files:
Please run the Windows Explorer and go to the folder "C:\Windows\Logs\CBS\" and copy all files to your document folder, also copy the setupapi.dev.log from the folder C:\Windows\Inf, the "C:\Windows\WindowsUpdate.log" and the file "C:\Windows\winsxs\poqexec.log"
to your document folder (otherwise you can't upload it), zip all files into 1 ZIP and upload the zip to your SkyDrive [1] and post a link here.
André
[1] http://social.technet.microsoft.com/Forums/en-US/w7itproui/thread/4fc10639-02db-4665-993a-08d865088d65
"A programmer is just a tool which converts caffeine into code"

Apple declares an Update for My windows 32 bit Vista Home Premium; 3 software updates are available; I download; I start installer; installation fails unexpectedly; installer rolls back installation; hardware seems PC capable;

Apple declares an Update for My windows 32 bit Vista Home Premium; 3 software updates are available; Safari browser=1, Itunes=2; Apple software updater=3; I download; I start installer; installation fails unexpectedly; installer rolls back installation; PC hardware seems PC capable; I have removed Mobile Me because of New Apple I-cloud Software Sync server registration?
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I have other software to complete the multimedia experience. what should I do with the constant automatic attempt to update
I can consult Gateway; device drivers web sites; hardware drivers;
Please Email Deanallen@ a*l.com
< Email Edited By Host >

Hi,
Please try this
Stop Windows Update Service and BIT Service now.
Go to C:\Windows\SoftwareDistribution and delete all file under this folder.
Start Windows Update and BIT service now.
Then try to download windows update now.
If doesn't work, please reset the windows update componments
http://support.microsoft.com/kb/971058/en-us
Yolanda Zhu
TechNet Community Support

Having trouble with itunes update. Error with itunes64.msi. Windows 8.1 64 bit. Thanks.

Having trouble with itunes update. Error with itunes64.msi. Windows 8.1 64 bit. I tried uninstalling, but I am stuck now trying to reinstall.
It says itcan't find the itunes64.msi destination folder.

(1) Download the Windows Installer CleanUp utility installer file (msicuu2.exe) from the following Major Geeks page (use one of the links under the "DOWNLOAD LOCATIONS" thingy on the Major Geeks page):
http://majorgeeks.com/download.php?det=4459
(2) Doubleclick the msicuu2.exe file and follow the prompts to install the Windows Installer CleanUp utility. (If you're on a Windows Vista or Windows 7 system and you get a Code 800A0046 error message when doubleclicking the msicuu2.exe file, try instead right-clicking on the msicuu2.exe file and selecting "Run as administrator".)
(3) In your Start menu click All Programs and then click Windows Install Clean Up. The Windows Installer CleanUp utility window appears, listing software that is currently installed on your computer.
(4) In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
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Automatic iTunes update fails because of Vista x64?

iTunes update fails via "Apple Software Update" on Vista x64, because the files that were downloaded are x86 and not x64! Is there a fix for this, or do we have to wait till an x64 version of "Apple Software Update" arrives?

As a workaround, you could try downloading the update direct from the Apple website:
Latest iTunes Installer
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Itunes update failed on 2 computers, couldn't find msvcr80.dll files.Now have no itunes at all

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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yes.
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check out TuneRanger.
*the more involved way*
click here for tips/information.
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ITunes update failed.

Yesterday an iTunes update failed on my Windows PC.
Now I can't start iTunes, a box comes up saying MSVC80dll is missing.
Re-installing fails as well.
Any ideas?
Thank you.

try with this one
uninstall all the apple application S/w like Quicktime, Bonjour,
apple Device Support, Apple Auto update, Itunes etc from your pc,
Reboot it
Now download a fresh itunes from apple and try installing
Reboot it
If you are having Problem in uninstalling any of the apple application
try 'revo uninstaller' and uninstall all the apple applications
mentioned above

Latest iTunes update fails, Uninstall / Re-Install solution fails

Hello All,
Katrina, b noir ....
Several days ago after the last iTunes update failed, crippling iTunes connection to the iTunes Store, I came to the support pages for answers.
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http://www.apple.com/itunes/download/
If you use Firefox instead of IE for the download (or vice versa), do you get a working installer?

I keep getting a msvcr80.dll error after iTunes update failed?

I keep getting a msvcr80.dll error after iTunes update failed?

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If instead you get an error message during the install, let us know what it says. (Precise text, please.)

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My reinstallation of itunes is failed, error code is error 7 (windows error 126) the system find not msvcr80.dll script

my reinstallation of itunes is failed, error code is error 7 (windows error 126) the system find not msvcr80.dll script

https://discussions.apple.com/thread/5817040?tstart=0
....try everything in that thread, should fix the issue.

My iTunes isn't reading my IPhone 5 and I have the newest iTunes update 11.0.3 I use a windows computer, when I plug my iPhone to another windows laptop it reads it, except mine

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Take a look at this link, http://support.apple.com/kb/TS1538

ITunes update failed to reinstall on 64-bit Windows 7 Home Premium

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