Can't launch iTunes due to a missing MSVCR90.dll file

iTunes system error. When I try and launch iTunes get the message "The Program can't start because MSVCR90.dll is missing from your computer. Try reinstalling the program to fix this problem." Then it says Error 7 (Windows error 126)
My specs are Win7 64
I had no problems with iTunes since I built this computer 6 months ago. I tried opening iTunes today and poof! it doesn't work.
What I have tried so far: I did a system restore. I uninstalled and reinstalled iTunes multiple times. I did a virus scan: Came back clean. I disabled my firewall settings and uninstalled and reinstalled program and tried to launch. Same error. I did a disk scan on my C drive. I did a registry cleaner with CCleaner. Not sure what else I can do. Any suggestions?

No one else having this problem?

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Hey bcolden,
I would try uninstalling and reinstalling following the directions in here:
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
http://support.apple.com/kb/HT1923
This section in particular contains important information in the uninstall process:
Use the Control Panel to uninstall iTunes and related software components in the following order and then restart your computer:
iTunes
Apple Software Update
Apple Mobile Device Support
Bonjour
Apple Application Support (iTunes 9 or later)
Important: Uninstalling these components in a different order, or only uninstalling some of these components may have unintended affects.
Let us know if following that article and uninstalling those components in that order helped the situation.
Welcome to Apple Support Communities!
Best,
Delgadoh

HT1926 can not download itunes due to not having msvcr80.dll and secerity reasons

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Go to unintstall on computer remove these files in this order.
Remove itunes
applesoftware
apple mobile device support
bonjour and apple applied support
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unclick "open in compatability mode"
It will work fine. Everything has worked for me after I learned this!!

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After I upgraded iTunes via the latest auto update offering, I was having problems with iTunes hanging on opening and generally lagging. So I (stupidly) removed the program from my computer (which is a PC running Windows XP btw) and tried to redownload it. Still the same problem so I followed the Aple guide to completely removing the program from my computer. Bonjour wouldn't remove, although I've since managed to get rid of it.
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Unfortunately, this sort of trouble has gotten more complicated to deal with ever since Microsoft pulled the Windows Installer CleanUp utility from their Download Center on June 25. First we have to find a copy of the utility.
Let's try Googling. (Best not to use Bing, I think.) Look for a working download site for at least version 3.0 of the Windows Installer CleanUp utility. (The results from mydigitallife and Major Geeks are worth checking.)
After downloading the utility installer file (msicuu2.exe), scan the file for malware, just in case. (I use the free version of Malwarebytes AntiMalware to do single-file scans for that.)
If the file is clean, to install the utility, doubleclick the msicuu2.exe file you've downloaded.
Now run the utility ("Start > All Programs > Windows Install Clean Up"). In the list of programs that appears in CleanUp, select any Bonjour and QuickTime entries and click "Remove".
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I tried updating Itunes the other day. It tried twice and it could not finish. I thought to try and reboot the computer. Well, it was very slow shutting down, then the blue screen of death came on ( Oh oh )....and said something was missing. It said, if this is the first time you received this message, then try rebooting the computer. I did, and everything seems to work, except itunes. Tried to open it, and It says MSVCR80.Dll is missing. I tried again to upload new version of itunes again, and then its saying there is problem with the mobile version. Any help would be appreciated. Im sure i can probalby find this file online, but dont know if this is the best case scenario. THanks!

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Message was edited by: Joe_TLC

I pulled my brains out trying to figure this bug out and I may have a solution for you.
All of it installed fine in my desktop, but a friend's laptop got the error you mentioned on quicktime, itunes, flash, officeXP and about anything else I tried to load for him.
If you look in: C:\documents and settings\<username>\Local Settings\Temp there will be an iTunes install log...open it in Notepad and see if it isn't exiting with a 1619 error while running msiexec.exe
If this is the case, this fix should work for you.
Seems some configurations of XP (and possibly Vista) aren't allowing full administrator rights to the account you set up when you installed XP (even though User Editor says you do have those rights.)
I read 2 MS articles and turned off simple file sharing, then gave ownership of the entire C: drive to the administrator. Logged the admin account off, logged his "admin" account in, and then gave rights to his personal directory to his account (c:\docs and settings\<username>)
Once I did that, every install that had previously errored out performed flawlessly.
The MS articles in question:
http://support.microsoft.com/?kbid=316309 (1619 error)
and
http://support.microsoft.com/?kbid=308419 (how to set special permissions)
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Doc

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Apple Application Support
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Can't launch iTunes due to a missing MSVCR90.dll file

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