Itunes 12.1.1 installation error

So I had itunes working fine but then an error popped up where it said mediatoolbox.dll wasn't found and to re-install itunes. So I tried to reinstall itunes but now every time I try to reinstall it an error pops up. I have attached the image of the error. Also if I press OK it continues the installation but when itunes is installed it says apple application support not found when I try to run itunes. So I tried to install that Apple Application Support separately by extracting just that install from the itunes setup. But that did not work because even though I extracted it separately from the itunes setup and installed it the same apple application support error would pop up when I tried to start itunes. I am on windows 8.1 64 bit. If there are other questions please let me know.

For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.
Your library should be unaffected by these steps but there are also links to backup and recovery advice should it be needed.
tt2

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ITunes 12.1.1 installation errors and resolution (Win 7, 64 bit)

I am providing all of the installation errors I had experienced
and all of the methods I had tried until I finally came up with a solution.
Hopefully the details will help you see if your situation has similarities
which hopefully will make this post helpful in terms of a solution.
PART ONE: INSTALLATION ERRORS
I received the following installation errors
when attempting to update to 12.1.1
and later once I uninstalled and attempted to reinstall 12.1.1.
I used this link for the download:
http://www.apple.com/itunes/download/?cid=wwa-us-kwg-music-itu
> itunes 6464setup.exe
I then tried this link:
http://support.apple.com/kb/DL1614
> itunes 12.1.1 64 bit
Again 6464 in the name.
After uninstalling the iunes,
I discovered under add/remove programs:
apple application support 32 bit
and apple support update
I deleted these and restarted the PC.
I then tried reinstalling a NEW version
from the second link above.
Opened download iTunes 6464setup.exe >
Windows installer> iTunes > welcome to itunes
> next > installation options > install > user account control
> yes > next > (error message via pop-up window):
ERROR MESSAGE ONE
"An error occurred during installation of assembly Microsoft VC80 CRT Type ="win32",
version = "8.0.50727.6195".publicKeyToken="1fc8b3b9a1e18e3b"
processorArchitecture ="amd64".
Please refer to Help and Support
for more information.
HRESULT: 0X80070091"
> OK > iTunes > Status: Starting services >
(error message via pop-up window):
ERROR MESSAGE 2
"Service 'Apple Mobile Device Service' (Apple Mobile Device Service)
failed to start. Verify that you have sufficient permission to start system services"
SIDE NOTE
There was a USB cable connected to the PC to charge the iPhone,
but the iPhone was not connected. I detached the USB cable from the PC in case it's relevant.
(I did not reattach the USB cable until I finally got a copy of itunes to install. You will see later in this post below.).
I then clicked Retry.
ERROR MESSAGE 2 AGAIN
I received the identical 'Apple Mobile Device Service' error as above.
I then clicked Ignore.
iTunes > Status
> User Account Control pop-up window)
> Do you want to allow to install Apple iTunes>
Yes >
> Congratulations > Finish
> (iTunes pop-up error window):
> iTunes Helper
ERROR MESSAGE 3
a)
"Apple Application Support was not found.
Apple Application Support is required to run iTunes.
Please uninstall iTunes and install iTunes again.
Error 2 "
> (iTunes pop-up error window)
> iTunes
b)
"Apple Application Support was not found.
Apple Application Support is required to run iTunes.
Please uninstall iTunes and install iTunes again.
Error 2 (Windows Error 2)"
> OK > OK
ERROR MESSAGE 4
I received all of these errors above
when I had tried a fresh install before returning to the forum to search for answers.
When I had first tried a fresh install, I didn't get as far as the Congrats.
I only got as far as the first and second error listed above
("An error occurred during installation of assembly Microsoft VC80 CRT Type ="win32"...
AND Service 'Apple Mobile Device Service' (Apple Mobile Device Service").
Clicked on iTunes icon on desktop
ERROR MESSAGE 5
I receive the (iTunes pop-up error message window)
error 2 windows error 2 (identical to what's listed listed under 3b).
PART 2 - INSTALLATION RESOLUTION
The issue finally is resolved.
HERE IT IS!!!
1) Uninstall iTunes
2) check remaining Apple programs
(click control panel > programs > uninstall)
> check the listed Apple programs
Apple Application Support 32 bit,
Apple Mobile Device Support,
Apple Software Update,
Bonjour
3) Locate and save the correct file version of iTunes for your OS and System.
In my case, it's Win 7.
You must check for the System Type.
Computer > right click to properties > system type.
In my case its 64 bit.
The 32 bit installer is named iTunesSetup.exe,
while the 64 bit installer is named iTunes64Setup.exe.
I learned that some folks had experienced issues with
the 64 bit installer on the Apple site whether it's
because they had downloaded the 32 bit
when they needed the 64 and therefore
couldn't complete the install or in my case,
what appears to perhaps be a corrupted file that stated 6464 in the .exe file name.
This lead me to believe that finding the file with the correct file name and
correct file size to prove it authentic for that version would likely be part of
the solution if not the solution. File Hippo is one suggested means to locate the file.
I locate the iTunes download "iTunes64Setup.exe" that matched the size of the file
to a valid copy of that version of ITunes and I set it aside.
4) I then made sure that all old copies
and remnants of iTunes and Apple software
has been uninstalled by checking add/remove.
Then C: program files
and then C: program files (x86),
then running CC Cleaner,
then cleaning the registry using CC Cleaner
and then checking Tools under CC Cleaner.
***I discovered under Tools that there were remaining Apple files listed
after the uninstall of iTunes and other files had taken place under iTunes***
I visit tools under CC Cleaner and deleted the remaining Apple files
including Apple Application Support, Mobile Device Support, and Bonjour,
***but I leave the Apple Software Update folder as is, in tact***
under C: Program files (x86) and Tools of CC Cleaner and under Add/Remove.
5) I restart the computer, install the new copy of iTunes 12.1.1 (64 bit),
iTunes64Setup.exe, and it installed with zero errors.
Hope someone will find this useful. Good luck.

Try the "for older video cards" version.
For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
The further information area has direct links to the current and recent builds in case you have problems downloading, need to revert to an older version or want to try the iTunes for Windows (64-bit - for older video cards) release as a workaround for installation or performance issues, or compatibility with QuickTime or third party software.
Your library should be unaffected by these steps but there are also links to backup and recovery advice should it be needed.
tt2

ITunes 7.0.2 installation--error message 2203

I have tried downloading iTunes 7.0.2 but I get error message 2203 for it and quicktime.
I uninstalled quicktime and reinstalled the program, then tried the download for iTunes again,
Still getting the error 2203
...and iTunes Music store keeps loading their Japanese store!

do you have the latest version of the Windows Installer on your PC?
probably the easiest way to check is to head into Add/Remove programs (don't uninstall anything at this stage), and look at your Windows Installer entry. if it doesn't have a "(KB893803)" next to it, try upgrading your Installer to version 3.1v2. see:
Windows Installer 3.1 v2 (3.1.4000.2435) is available

I am unable to install iTunes due to Windows Installer error message on Vista

I needed to update my iTunes since I purchased the iPad2. My Windows Vista machine will not allow me to update the program due to a "Windows Installer" error message. I first attempted to update, then I uninstalled and am unable to reinstall the software."There is a problem with this Windows Installer package. A program required for this install to complete could not be run..."

I finally got the program to install/run. I downloaded a third copy and saved it again on the desktop. I selected "Run as Administrator" instead of "Run" It must have been the 10th plus time I tried to install, but this time it completed. I don't know if the "Run as Administrator" was the key since it is Vista, or if I just got lucky. Either way I am relieved.

ITunes 10.5.3 - Installation Error - Vista SP2

At the beginning of installation, I receive this - "The Installer has insufficient priveleges to modify this file: C\Program Files\Common Files\Apple\Apple Application Support\WebKit.resources\inspector\images\toolbarIconsSmall.png."
Of course, this permission error follows with another message after installation, when it wants to open the program - "iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows error 127). When I try to manually open it, even by opening as administrator, it says, "The procedure point kCMByteStreamNotification_AvailableLengthChanged could not be located in the dynamic link library CoreMedia.dll."
Is this an easy fix? I'm not sure why permission is messing with dll's. iTunes was working fine before I updated it a few months ago. Sorry I don't have the version info. Other than that nothing has been changed.

"The Installer has insufficient priveleges to modify this file: C\Program Files\Common Files\Apple\Apple Application Support\WebKit.resources\inspector\images\toolbarIconsSmall.png."
That one's consistent with disk/file damage. The first thing I'd try with that is running a disk check (chkdsk) over your C drive.
Vista instructions in the following document: Check your hard disk for errors
Select both Automatically fix file system errors and Scan for and attempt recovery of bad sectors, or use chkdsk /r (depending on which way you decide to go about doing this). You'll almost certainly have to schedule the chkdsk to run on startup. The scan should take quite a while ... if it quits after a few minutes or seconds, something's interfering with the scan.
Does the chkdsk find/repair any damage? If so, can you get an install to go through properly afterwards?

Unable to install Itunes, Win-XP, Windows Installer error 1722.

When I install itunes on XP-SP3 (fully updated) with Windows installer 4.5 - I get this message half the way through -refer to attachment-
I have uninstalled all apple products, installed quick time - this installed but still provided the error. I have extracted the package and attempted to install each product seperatly however it provides this error only while installing the Apple Software Update. The error code comes from the event viewer.
Any help would be greatly appreciated.

This is a serious error. With out fixing this we cannot install itunes on the system. Any help please. Thank you.

HT2311 itunes 10.6.3 installation error! please help!

i downloaded itunes 10.6.3 from the apple website. when i run the .dmg file the installer starts and in the end it says "the installer encountered an error that caused the installation to fail.Contact the software manufacturer for assistance". i cant update my itunes 10.1.2 to 10.6.3! i am using macbook pro 13" on snow leopard 10.6.6.
P.S- i just formatted my hdd and reinstalled OSx 10.6.6

I called the apple care tonight because I had exactly the same problems!
The lady on the phone then email me a link on how to uninstall the older version of iTunes.
http://support.apple.com/kb/HT1925
Now it's working!!!!!
Hope this helps you!!!

Trying to download update to iTunes in Vista but get Windows installer error. How do I update?

Trying to download update to iTunes but get Windows Installer error. How do I correct?

many thanks.
"There is a problem with this Windows Installer package. A program required for this install to complete could not be run. Contact your support personnel or package vendor."
Perhaps let's first try updating your Apple Software Update.
Launch Apple Software Update ("Start > All Programs > Apple Software Update"). Does it launch and offer you a newer version of Apple Software Update? If so, choose to install just that update to Apple Software Update. (Deselect any other software offered at the same time.)
If the ASU update goes through okay, try another iTunes install. Does it go through without the errors this time?

My iTunes wont update, and I can't connect my new iPhone if it doesn't update. It says error when I try to update, and I cant download it because of a "Windows Installer" error...

I just not a new iPhone and in order to sync it I need the newest iTunes, but I can't update it! I tried checking for updates and then trying to downlaod it. I get this error: "Errors occured while installing the updates. If the problem persists, chose Tools > Download Only and try installing manually."
Where on earth is Tools anyway?
When I tried just reinstalling all of iTunes, I had a Windows Installer error...I don't even know what that is!

tools is at the top of the apple updater but dont get your hopes up

I can't install Itunes because of Windows installer package error, please help!

I tried installing Itunes for a long time on my desktop, I'm running Vista. Everytime I try to install Itunes it runs for a bit, then gives me this message
" There is a problem with Windows Installer package. A program required for this install to complete could not be run. Contact your support personnel or package vendor."
I went through many posts on how to solve this problem, I uninstalled and deleted all the files from this thread : http://support.apple.com/kb/HT1923
and tried to reinstall Itunes, didn't work, same error message.
After i tried to install Itunes in Clean boot still didn't work.
I also downloaded MicrosoftFixit.Program which apperantly fixed this problem for some people, not for me.
Then I extracted Itunes and tried to install all the components seperately, everything installed correctly, however when I tried to install Apple Software update
I got the same error message, i think it is the Apple software update that is causing this problem but I have no idea how to solve this problem.
How do I solve this, any thoughts or suggestions???

Go to Microsoft website to fix install and Unistall problems. Click "Run now" from Fix it to remove all iTunes & related installer files:
http://support.microsoft.com/mats/Program_Install_and_Uninstall
Be aware that Windows Installer CleanUp Utility will not remove the actual program from your computer. However, it will remove the installation files so that you can start the installation, upgrade, or uninstall over.
Now, uninstall Bonjour from Control Panel.

ITunes stopped working on Windows 7, 64 bit. Uninstalled and attempted to reinstall. Windows installer error....iTunes. 10.6.3.25

iTunes stopped working on Windows 7, 64 bit. Uninstalled and attempted to reinstall. Windows installer error....iTunes. 10.6.3.25.
Downloaded latest version onto desktop. Will not complete install.

Many thanks.
Let's try the following user tip with that one:
"There is a problem with this Windows Installer package ..." error messages when installing iTunes for Windows

I get this error when I try to install iTunes 10.7: "The installer has encountered an unexpected error installing this package. This may indocate a problem with this package. The error code is 2203."

I am running Windows 7 64bit. I downloaded the latest version of iTunes and ran the installer. This message pops up, I click OK and the installation continues. Then, when I try to launch iTunes I get this: "iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows error 5)". I have also received this error message even when the installation hasn't had any problems. I have uninstalled, reinstalled, restarted, repaired my .net framework, uninstalled all components following the steps in Article: HT1923 http://support.apple.com/kb/HT1923 all to no avail. It still won't run. It was working perfectly before I updated it to 10.7. After that it all went to crap. I even tried installing the previous version and still get this error message. Any suggestions?

Okay ... so it's not one of the cases of bodged up ACLs on the Apple folder in Common Files. (That's been underlying a few of the recalcitrant E7W5s.
Just in case, let's try the fixit from the following document:
Fix problems with programs that can't be installed or uninstalled

Itunes "Apple Mobile Device Service" Installation error

Im trying to install Itunes and i receive this error:
"Service 'Apple Mobile Device' (Apple Mobile Device) failed to start. Verify that you have sufficient privileges to start system services."
I started services.msc and there isn't a service called Apple Mobile Device there.
I also ran the Installation in Run as Administrator and i still receive the same error.

I've been having the same problem on my Windows 7 64-bit computer. If you are running a 64-bit system, and are installing the 64-bit version of iTunes, the problem may lie in where the program is being installed. The default location that showed up for me was "Program Files (x86)" which is for 32-bit programs. Once I changed the default to just "Program Files" (which is for 64-bit programs) everything seemed to install correctly. Before I tried this install, i cleaned up everything: ran Registry Mechanic, Malwarebytes, Spybot Search and Destroy, then closed unncessary files and programs; closed unnecessary processes using Task Manager, I did leave my Norton running.
Hope this helps.

ITunes installation error on Windows 7 PC

We just purchased a new iPad and are trying to load iTunes onto our 64-bit Windows 7 Dell PC to transfer some songs. Before it completes the download I receive the following error: "The installer encountered errors before iTunes could be configured. Errors occurred during installation. Your system has not been modified." That's it, no error code - nothing. Does anyone recognize this error? Thanks!!

Item or object?
For "Object already exists" or "Access denied" errors when installing try opening Control Panel > Programs and Features > View installed updates then checking for Security Update for Microsoft Windows (KB2918614). Uninstall if you have it, then reboot and try installing again.
For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down the page in case one of them applies.
Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
tt2

Itunes 7.5 Installation Error Message

I tried to install the new itunes 7.5, but an error message always appears stating: "The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2738". I have really no idea what to do. All of my songs do not appear on my ipod but they appear on itunes. Does anyone know how to resolve this issued so that I can begin to use my ipod again? I need help!

Hi Niel,
I tried the instructions and I received another message which said: "The module ".d11" failed to load. Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files. The specified module could not be found." Thank you for responding! Any other suggestions for this issue? Help!

Itunes 12.1.1 installation error

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