Today, I got a "update iTunes and tonight, I can't access my iTunes. I uninstalled and reinstalled and the error message reads: iTunesexe-unable to locate component. App has failed to start due to MSVCR80.dll was not found: Reinstall may fix" but hasn't.

I received an iTunes update today and updates files. Tonight, I couldn't acces my iTunes. I uninstalled and reinstalled and still getting same error message: iTunes exe unable to locate component. This application has failed to start because MSVCR80.DLL was not found. Reinstalling the application may fix this problem. I've done it several times and still get the error. I'm fearful I have lost all my music. What can I do?

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

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Application has failed to start b/c qtcf,dll was not found

I recently had my computer serviced by the Geek squad for virus removal, I tried to use itunes and connect my ipod and I keep getting this message by: itunesHelper.exe- unable to locate component. "This application has failed to start because QTFC.dll was not found. Re-installing the application may fix this problem." I have tried to install Itunes and quick time player, but the same error pops up and I can't close the tab. Any suggestions?

QTCF.dll
Let's doublecheck on the current locations of that dll.
Go "Start > Search" and then do an all files and folders search on QTCF.dll. In "More advanced options", make sure the following items are all checked:
*Search System folders*
*Search hidden files and folders*
*Search subfolders*
What QTCF.dll files do you find, and what are their file locations?

"Itunes failed to start B/c MSVCR80.dll was not found."

ANyone got any help with this issue on my Laptop?
Worked fine yesterday and today I keep getting this pop up. I've deleted and downloaded itunes again (twice) and clicked the repair button with no luck.
Help!

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 press on)
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

Error Message "ElementsAutoAnalyzer.exe unable to locate. This application failed to start because ExtendedScript.dll was not found". This error message is seen when first starting Windows Vista, prior to starting Photoshop Elements 12.

Error Message "ElementsAutoAnalyzer.exe unable to locate. This application failed to start because ExtendedScript.dll was not found".
This error message is seen every time when first starting Windows Vista, PRIOR to starting Photoshop Elements 12.1
It does not seem to interfere with the normal operation of Photoshop Elements, but it is a constant annoyance.

try removing all itunes and all other apple program
follow this link for more info. http://support.apple.com/kb/HT1923
reboot ur window after uninstalling
after that download the latest itunes setup and install.

Active MovieWindow:Rim.Transcoder.Exe-This application has failed to start because MagCore.dll was not found

Immediately after installing the latest version of Blackberry Desktop, I got the above error. When I clicked the OK button, the error dialog box closed, and then popped right back up. I found that if I moved the dialog box to the side, the Desktop software worked fine.
MagCore.dll is a component of ArcSoft products, so I uninstalled the only ArcSoft software on my computer: MediaImpressions. After rebooting to complete the uninstall, the error disappeared.
Here is another user with the same problem:
http://answers.microsoft.com/en-us/windows/forum/windows_xp-hardware/active-moviewindowrimtranscoder...

Immediately after installing the latest version of Blackberry Desktop, I got the above error. When I clicked the OK button, the error dialog box closed, and then popped right back up. I found that if I moved the dialog box to the side, the Desktop software worked fine.
MagCore.dll is a component of ArcSoft products, so I uninstalled the only ArcSoft software on my computer: MediaImpressions. After rebooting to complete the uninstall, the error disappeared.
Here is another user with the same problem:
http://answers.microsoft.com/en-us/windows/forum/windows_xp-hardware/active-moviewindowrimtranscoder...

HT1925 This application failed to start because msvcr80.dll was not found.

I experience followig problem.
This application failed to start because MSVCR80.dll was not found reinstalling this applicationmay fix this problem.
Why doesn't Apple provide an adequqte update to fixthis problem?
This privious iTunes updat caused this problem so they are responsible fo an update correction.
Is there an Apple iTunes update te be expected?

Solving the iTunes Installation Problems in Windows
1. Apple has posted their solution here: iTunes 11.1.4 for Windows- Unable to install or open - MSVCR80 issue.
2. If the Apple article does not fully resolve the problem for you, then try Troubleshooting issues with iTunes for Windows updates - MSVCR80.

HT1926 My itunes won't open because it says "This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem" Can someone help? I don't want to delete it altogether due to needing the phone backup

I was given notification to upload the latest version of itunes recently, so I clicked installed. However it has since corrupted my itunes and I get the error message:
"This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem".
In poor timing, I have also accidently damaged my phone and have a new one to restore it to an old back up.
It is because of this I am reluctant to completely delete itunes off my computer and start again for fear of losing my back ups.
Is there another way to fix iTunes so I can open it again?
Thanks

Hey I finally got an older vesion of itunes to work!!! 10.7 x64 for windows 7
After uninstalling all apple products even quicktime
I had to delete everything from (program files, and program files x64, program data,)
And all downloads from apple, and I went in to search deleted other stuff from apple, and itunes
But definently not my itunes library and Playlist
Down loaded 10.7 x64 for windows 7, but checked (do not start when done)
Then I emptied my recycling bin and restarted my PC
I ran geek tech tool box same as reg cure pro, also PC Tools registry cleaner, and CC Cleaner
Then I emptied my recycling bin and restarted my PC
And wallah... It finally works, and I Love the older version anyways.
Easier to download and transfer music!!!!!

Itunes update would not install due to an error, now itunes won't run and I get this message when I try to launch itunes: "This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem"

itunes update would not install due to an error, now itunes won't run and I get this error message when I try to launch itunes: iTunes.exe - Unable to Locate Component "This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem."
I'm on a Dell PC running Vista Home Premium.
HELP!!!!!!!!!!!!!!!!!!!

try removing all itunes and all other apple program
follow this link for more info. http://support.apple.com/kb/HT1923
reboot ur window after uninstalling
after that download the latest itunes setup and install.

ITunes would not start... I got error: "applcation failed to start because MSVCR80.dll was not found. Re-installing the appliacation may fix the problem." When I tried reinstalling it failed.

I recently connected my iPhone to my computer, iTunes would not start... I got error: "applcation failed to start because MSVCR80.dll was not found. Re-installing the appliacation may fix the problem." When I tried reinstalling it failed - it said insufficient permission. I have administrative rights... please, any help and/or ideas will be appreciated.

Solving the iTunes Installation Problems in Windows
1. Apple has posted their solution here: iTunes 11.1.4 for Windows- Unable to install or open - MSVCR80 issue.
2. If the Apple article does not fully resolve the problem for you, then try Troubleshooting issues with iTunes for Windows updates - MSVCR80.

Updating iTunes with error message "this application has failed to start because MSVCR80.dll was not found"?

After updating iTunes, has anyone got the message "this application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem." message and "iTunes was not installed correctly. Please re-install iTunes. Error 7 (Windows error 126)"? I've tried everything from un-installing and re-installing iTunes to deleting the SC Info. Any help would be greatly appreciated

Click here and follow the instructions. You may need to completely remove and reinstall iTunes and all related components, or run the process multiple times; this won't normally affect its library, but that should be backed up anyway.
(99840)

This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem.

I recently tried to download the latest version of iTunes, but an error occured during the process. It was recommended that i reinstall iTunes to attempt to correct that problem. After I attempted to reinstall, an error came up with the title "iTunes.exe - Unable to locate component." the body of the error message read "This application has failed to start because MSVCR80.dll was not found. Reinstalling the application may fix this problem." When I click "Ok", another error message pops-up reading "iTunes was not installed correctly. Please reinstall iTunes. Error 7 (Windows error 126)". I tried reinstalling iTunes 3 times now, each time with the same result. What is going wrong, and what do I need to do?

Kappy, I completely overlooked your original response due to it's small, one line nature and poor UX design of the area surrounding the message area.
Upon following the complete instructions linked from the link you posted (http://support.apple.com/kb/HT1923?viewlocale=en_US&locale=en_US), my first attempt resulted in everything being installed except for iTunes. So trying yet again.
I do have Safari for Windows Vista installed, which is why I could not delete everything in the C:\Program Files\Common Files\Apple\ folder. I'm guessing this is Apple's way of completely removing Safari Win from history (there's always an under-the-table reason when something like this happens with Apple installs, they just won't say it publicly). Uninstalling Safari. Uninstalling Safari removes the remaining "Internet" files from C:\Program Files\Common Files\Apple\
Uninstalling iCloud. Uninstalling MobileMe Control Panel that was never used. That leaves only QuickTime installed as an Apple product on my machine.
Just for the record, I did not have this folder: C:\Program Files\iPod\
Emptied the Recycling Bin.
Shut down and fresh start-up.
Install attempt again: results in the installer saying something interrupted it (no other programs open)
Installing again immediately after error: Success
Clearly there are issues with this installer.
A pop-up shows up with "The registry settings used by the iTunes drives for importing and burning CDs and DVDs are missing. This can happen as a result of installing other CD burining software. Please reinstall iTunes"
No other CD burning software installed other than what came pre-installed by Gateway and a install of Windows Vista Pro (or whatever the top expensive one was called).
iTunes launched. iTunes Library, items like Movies & Music, and playlists are still intact and usable.
Good thing I don't have these issues on my Macs (ahem, which is why these errors are allowed to persist by Apple to discourage Microsoft/Windows/PC use and purchase, all about the money and Apple has become the non-caring giant it once sought to overthrow as the underdog, miss those days).
Thanks Kappy. Thanks for the time suck Apple.

I had itunes installed on my pc. I received notice to update. I started update but gpt the following message - this application failed to start because MSVCR80.dll was not found. Reinstalling may fix the problem. I uninstalled and have tried to reinstall

I already had itunes installed on my pc. I received an update and tried to install it. I got a message
This application failed to start because MSVCR80.dll was not found. Reinstalling may fix the problem.
I uninstalled itunes and tried to reinstall. itunes says it has installed but when I try to open itunes I get the same message.
How do I repair/sort out this error/fault
Thanks
David

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Cl.exe and mt.exe but got "...MSVCR80.dll was not found. Re-installing..."

The compile and manifest were completed with no complaints but when I ran the code, I got "This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem.".
Here is what I did:
Step 1: Compile and manifest
"%MSVCDir%\bin\cl.exe" /I"%JAVA_HOME%\include" /I"%JAVA_HOME%\include\win32" /MD /LD /FeBinless.dll ../info/binless/jni_binless.c ../jni_shared/jni_gen_c.c ../jni_entropy/jni_entropy_c.c ../jni_input/jni_input_c.c ../info/binless/binless_c.c ../../info/binless/BinlessOpenComp.c ../../info/binless/BinlessWarpComp.c ../../info/binless/BinlessEmbedComp.c ../../info/binless/BinlessInfoComp.c ../../shared/MatrixToHist2DComp.c ../../shared/Info2DComp.c ../../shared/sort_c.c ../../shared/gen_c.c ../../shared/hist_c.c ../../input/input_c.c ../../entropy/entropy_c.c ../../entropy/entropy_bub_c.c ../../entropy/entropy_chaoshen_c.c ../../entropy/entropy_ma_c.c ../../entropy/entropy_tpmc_c.c ../../entropy/entropy_jack_c.c ../../entropy/entropy_plugin_c.c ../../entropy/entropy_ww_c.c ../../entropy/variance_jack_c.c ../../entropy/variance_boot_c.c ../../entropy/entropy_nsb_c.cpp /link libxml2.lib libgsl.a libgslcblas.a >> binless-out.txt
mt.exe -manifest Binless.dll.manifest -outputresource:Binless.dll;2
The operating system is Windows XP and has the following environment variables:
PATH=%JAVA_HOME%\bin;%LIBXMLDir%\bin;%ICONVDir%\bin;%GNUWINDir%\bin;%WINSDKDir%\bin;%MSVCDir%\bin;%MSVCDir%\..\Common7\IDE;%ZLIBDir%\bin;%systemroot%\system32;%systemroot%;%systemroot%\system32\wbem
INCLUDE=%WINSDKDir%\include;%GNUWINDir%\include;%MSVCDir%\include;%MSVCDir%\PlatformSDK\include;%JAVA_HOME%\include;%JAVA_HOME%\include\win32;%LIBXMLDir%\include;%ICONVDir%\include;%ZLIBDir%\include
LIB=%WINSDKDir%\lib;%GNUWINDir%\lib;%MSVCDir%\lib;%MSVCDir%\PlatformSDK\lib;%LIBXMLDir%\lib;%ICONVDir%\lib;%ZLIBDir%\lib
where:
GNUWINDir=c:\project\lib\GnuWin32
ZLIBDir=c:\project\lib\zlib
ICONVDir=c:\project\lib\iconv
LIBXMLDir=c:\project\lib\libxml2
WINSDKDir=C:\Program Files\Microsoft SDKs\Windows\v6.0A
MSVCDir=C:\Program Files\Microsoft Visual Studio 9.0\VC
Step 2: Compile the Java jni code
javac -d ..\classes ..\server\Binless.java
Step 3: Run the code
java -classpath ..\classes jni.test.test_binless
Got: This application has failed to start because MSVCR80.dll was not found. Re-installing the application may fix this problem.
Any help is greatly appreciated. Thanks.

This is a Windows side-by-side issue not a JNI issue. As such it doesn't really
belong in this forum except as an object lesson to people who create JNI's.
I had these issues when I moved to Visual Studio 2005 - which, oddly enough,
was the version of the IDE where SxS support was not only introduced, but
enforced.
The fact that you tried to put a SxS folder in the PATH tells me you know
nothing about how SxS and manifests works. You need to learn about these
things and then your problems will become blushingly obvious.
The Binless.dll manifest must be embedded, and it must contain dependency
entries that specify the SxS requirements, including the version(s) of the
dependent libraries. Secondly, the specific version of the libraries must be
installed on the target system.
My guess is your manifest specifies a CRT version that's not installed on your
system and that is why the system is complaining. Look for the
Binless.dll.intermediate.manifest file. It will tell you what your dll expects.
Here's an example of a dll (debug version) manifest:
<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
    <security>
      <requestedPrivileges>
        <requestedExecutionLevel level='asInvoker' uiAccess='false' />
      </requestedPrivileges>
    </security>
</trustInfo>
<dependency>
    <dependentAssembly>
      <assemblyIdentity type='win32' name='Microsoft.VC90.DebugCRT' version='9.0.30729.4148' processorArchitecture='x86' publicKeyToken='1fc8b3b9a1e18e3b' />
    </dependentAssembly>
</dependency>
<dependency>
    <dependentAssembly>
      <assemblyIdentity type='win32' name='Microsoft.VC90.DebugMFC' version='9.0.30729.4148' processorArchitecture='x86' publicKeyToken='1fc8b3b9a1e18e3b' />
    </dependentAssembly>
</dependency>
<dependency>
    <dependentAssembly>
      <assemblyIdentity type='win32' name='Microsoft.VC90.ATL' version='9.0.30729.4148' processorArchitecture='x86' publicKeyToken='1fc8b3b9a1e18e3b' />
    </dependentAssembly>
</dependency>
</assembly>Get [Dependency Walker|http://www.dependencywalker.com/] it's free. You will need it at some point.
Cheers,
Mike

My i tunes is not working anymore. it says the application failed to start because MSVCR80.dll was not found. I have tried re-installing the program but it doesn't work.

Hello,
Yesterday I tried to get onto iTunes and was unable to. I keep getting this message:
Itunes.exe - Unable to locate component.
This application has failed to start because MSVCR80.dll was not found.
Re-installing the application may fix this problem.
I have tried to uninstall and re-install the program several times but cannot get it to work. Now I get this message:
iTunes was not installed correctly. Please reinstall iTunes.
Error 7 (Windows error 126)
I have tried to do what I can but am not really iTunes savy and would like to get this issue resolved. Can anyone help me?
THANK YOU!!
Cyn

Hello there, Cyn.
The following Knowledge Base article provides some great information for troubleshooting your issue. Keep in mind uninstalling and reinstalling has to be done in a very specific fashion, therefore use the guidelines from this article to accomplish this:
Issues installing iTunes or QuickTime for Windows
http://support.apple.com/kb/ht1926
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

HT1926 I tried to download the latest version of iTunes but now seem to have lost everything and can not access my library at all. Instead i keep on receiving the message 'Application has failed to start because MSVCR80.dll was not found. I cannot access

I tried to download the latest version of iTunes but failed half way through. It suggested that i reinstall we I tried. However, i now get this message which states "Application has failed to start because MSVCR80.dll was not found. Reinstalling the application may fix the problem"
I have tried this but with no success. I have therefore found that I cannot access my iTunes library at all now.
What should I do.

Click here and follow the instructions. You may need to completely remove and reinstall iTunes and all related components, or run the process multiple times; this won't normally affect its library, but that should be backed up anyway.
(99792)

Today, I got a "update iTunes and tonight, I can't access my iTunes. I uninstalled and reinstalled and the error message reads: iTunesexe-unable to locate component. App has failed to start due to MSVCR80.dll was not found: Reinstall may fix" but hasn't.

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