Avfoundationcf.dll problem!!!!

someone please tell me why avfoundationcf.dll is missing where did it go???? and how do i get it back???? help before i chuck my notebook in the canal and buy a cd walkman

Taken at face value, you're having trouble with an Apple Application Support program file there. (Apple Application Support is where single copies of program files used by multiple different Apple programs are kept.)
Let's try something relatively simple first. Restart the PC. Now head into your Add or Remove programs control panel, select "Apple Application Support", click "Change" and then click Repair.
If no joy after that, try the more rigorous uninstall/reinstall procedure from the following post (although it's for Vista and 7, just read "Computer" as "My Computer", read "Uninstall a program control panel" as "Add or Remove programs control panel" and assume the system is 32-bit, and you'll be doing the right things):
Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever since I did that my itunes won't open any more. Itunes starts but before anything loads a window pops up saying that the prograam has encountered a problem and sh...

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Itunes won't launch anymore: AVFoundationCF.dll problem

Hi,
since my last itunes update, it won't launch because of a "AVFoundationCF.dll" problem. I'm on a Windows XP system. Can anyone help me please?

Taken at face value, you're having trouble with an Apple Application Support program file there. (Apple Application Support is where single copies of program files used by multiple different Apple programs are kept.)
Let's try something relatively simple first. Restart the PC. Now head into your Add or Remove programs control panel, select "Apple Application Support", click "Change" and then click Repair.
If no joy after that, try the more rigorous uninstall/reinstall procedure from the following post (although it's for Vista and 7, just read "Computer" as "My Computer", read "Uninstall a program control panel" as "Add or Remove programs control panel" and assume the system is 32-bit, and you'll be doing the right things):
Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever since I did that my itunes won't open any more. Itunes starts but before anything loads a window pops up saying that the prograam has encountered a problem and sh...

Opening iTunes shows an error- The program can't start because AVFoundationCF.dll is missing from your computer. Try reinstalling the program to fix this problem. ; Even after reinstalling iTunes doesn't start!

When I start the iTunes program it comes up with this.. pls help!!
"The program can't start because AVFoundationCF.dll is missing from your computer. Try reinstalling the program to fix this problem."
Even after reinstalling iTunes doesn't start!

Repair your Apple Application Support.
Control Panel > Programs n Features (Win7) or Add n Remove Programs(XP) > highlight AAS, click CHANGE then REPAIR.

After installing update itune 10.5 will not open or run on windows 7 pc keeps telling me error 7 126 and that AVFoundationCF.dll failed to load. reinstall.I have done the complete 6part unistall 10 times now and each time I get the same thing anyone have

So I installed the latest update of Itune on my Windows 7 Ultimate 64 bit PC.( the previous versions worked fine never a problem)
It installs, and comes up with error7 126. Reinstall program again.
So I go through all six steps to unistall, and reinstall a frsh downloaded compy of 64 bit Itune from Apple Site. and reinstall again and again, went through this process 10 times still having same problem, including now also comes up with AVFoundationCF.dll missing, try to install that won't install.
So now I can not use anything apple, iteunes, safari, update etc, nothing will work, which means I can no lobger sync or update my Iphone 4S.
Does anyone have an answer for me????

I'm an applications developer and also run a part-time videography business. As such, I require more than 3.12GB of RAM. That is the physical limitation of a 32bit system. Pointless to stay on 32bit if you plan on having more than that much RAM.
I'm also not about to pay someone to fix my PC when I can do it myself. I was originally hoping for someone who had experienced the problem before to point me in the right direction so I didn't have to spend so much time trying to figure out what the issue was for myself.
Basically, in the end the problem was caused because right at the point in time when I chose to uninstall, and reinstall; Apple released a new version of iTunes. This version in turn had a requirement of iOS 4.2 to sync with the iPhone. This is a pretty embarrassing for Apple that they would release software reliant on other software before said software was released.
Had I realised I was downloading a newer version at the initial point of installation, this wouldn't have been an issue. I could've easily have rolled back iTunes to the previous version and gotten on with my life.
Another issue is that iTunes is not actually a 64 bit application. It masquerades as one to allow installation on the 64 bit platform.

I downloaded the latest version of itunes. Now I cannot open iTunes. I receive this error message: The procedure entry point AVCFAssetCreateWithByteStreamAndOptions could not be located in the dynamic link library AVfoundationCF.dll. Thoughts?

I downloaded the latest version of iTunes on my PC. Now I cannot open iTunes. I receive the following error message: "The procedure entry point AVCFAssetCreateWithByteStreamAndOptions could not be located in the dynamic link library AVfoundationCF.dll" After pressing the "OK" button I receive a second error message: 'iTunes not installed correctly. Please reinstall iTunes. Error 7 (Windows error 127)". I've uninstalled iTunes and reinstalled to no avail. I've also eliminated the temp files (per suggestions on the trouble-shooting page) and no luck. I also tried system restore and that did not fix the problem. Any thougths on a repair?

Taken at face value, you're having trouble with an Apple Application Support program file there. (Apple Application Support is where single copies of program files used by multiple different Apple programs are kept.)
Let's try something relatively simple first. Restart the PC. Head into your Add or Remove Programs control panel, select "Apple Application Support", click "Change" and then click "Repair".
If no joy after that, try the more rigorous uninstall/reinstall procedure from the following post. (Although the procedure is for Vista and 7 and you've got XP, just read "Computer" as "My Computer", read "Uninstall a program control panel" as "Add or Remove programs control panel" and assume the system is 32-bit, and you'll be doing the right things.)
Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever since I did that my itunes won't open any more. Itunes starts but before anything loads a

While running an update in Itunes i received an error message - Unable to locate component because AVFoundationCF.dll was not found. Then Itunes was not installed correctly. Error 7 (windows error 126) Do I have to reinstall and will I loose all my music?

While running an update in itunes (not installing), it stopped in the middle of the update and i receceived the following messages:
Application failed to start because AVFoundationCF.dll was not found. Reinstalling itunes may fix the problem. Then "itunes was installed incorrectly. Please reinstall itunes Error 7 (Windows error 126)". If i uninstall and reinstall itunes will I lose all of my music, etc.?

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 127 on windows 7 - procedure entry point AVCFPlayerItemDurationChangedNotification could not be loated in the dynamic link library AVFoundationCF.dll. PLEASEHELP ME!!!!!

I need help, my itunes wont open after I installed the new updates. The error messageis number 127 and says procedure entry point AVCFPlayerItemDurationChangedNotification could not be loated in the dynamic link library AVFoundationCF.dll
How do I fix this? Please help

If I do the reinstall do I lose all the music I have loaded onto my computer?
In the normal course of events, an uninstall/reinstall doesn't touch your content files. (That being said, it's always a good idea to have a backup in case of disasters.)
On a Windows 7 machine, I'd try the instructions from the following post (given that the AAS repair didn't work for us):
Re: I recently updated to vista service pack 2 and I updated to itunes 10.2.1 and ever since I did that my itunes won't open any more. Itunes starts but before anything loads a window pops up saying that the prograam has encountered a problem and sh...

I updated iTunes today (Windows). When I tried to launch, I get the message, ""The procedure entry point AVCFURLAssetInheritURIQueryComponentFromReferencingURIKey could not be located in the dynamic link library AVFoundationCF.dll".

I updated iTunes today (Windows). I restarted the computer but when I tried to launch, I get the message, ""The procedure entry point AVCFURLAssetInheritURIQueryComponentFromReferencingURIKey could not be located in the dynamic link library AVFoundationCF.dll".
I then did a new install of the latest iTunes version and got the same problem. No more iTunes.
HELP!!!

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 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

How do i fix itunes, AVFoundationCF.dll missing (error 7, windows error 126)

I tried to update itunes to 10.5 but wouldn't install. I then tried to uninstall and reinstall and have had problems ever since. I tried removing every apple file on my computer( itunes, bonjour, etc..) with REVO uninstall. Then reinstalling to no avail, I receive AVFoundationCF.dll is missing follwed by error 7 windows error 126. I have been at this all day, and has really gotten me frustrated. I have searched through these forums and tried different solutions people say have worked for them but not for me. My last resort is to wipe my system and restore to factory settings, which I dont want to do. Can anyone offer some advice? Thanks

I just found out why it was throwing out those error, you have to do a complete cleaning of your cache, it retains all the Apple information for some reason. I used a cache cleaner, but you van use the cache cleaner in Windows 7 or Vista 64 bit for this. Now Itune downloaded but without installing Quicktime. I actually like that.

AVFoundationCF.dll

I am having this same problem as below: PlatinumRed and I can not solve it
AVFoundationCF.dll error message at launch after updating to iTunes 10.1
Posted on: Nov 12, 2010 2:14 PM, by user: rctneil -- Relevance: 100% -- Show all results within this thread
Hey,
I did About>Check for updates and installed the 10.1 update and now whenever I try to open iTunes I get the following error:
The procedure entry point AVCFAssetTrackIsExcludedFromAutoselectionInTrackGroup could not be located in the dynamic link library AVFoundationCF.dll
I have tried downloading the full itunes 10.1 64bit installer from the web
AVFoundationCF.dll not found? + Error 7 (Windows error 126
Posted on: Dec 9, 2010 3:13 PM, by user: jashie -- Relevance: 94% -- Show all results within this thread
/> supposedly the component AVFoundationCF.dll is not found, and the solution to that is REINSTALL
avfoundation cf.dll Not Found
Posted on: Jan 14, 2011 6:28 PM, by user: 12q2w4 -- Relevance: 27% -- Show all results within this thread
Ever since I updated my iTunes when i try to open it it says "This application has failed to start because AVFoundationCF.dll was not found." i need to know how to install AVFoundationCF.dll or at least how to fix this problem. Please Help
error 7 windows 126
Posted on: Nov 23, 2010 5:27 PM, by user: nannan98 -- Relevance: 25% -- Show all results within this thread
i have uninstalled and installed itunes10 3times..still get same error....AVFoundationCF.dll.....help
Download itunes
Posted on: Dec 31, 2010 2:41 PM, by user: clemike -- Relevance: 22% -- Show all results within this thread
I have downloaded itunes (apparently successfully), but cannot open the program. Error 7 (Windows error 126). Also AVFoundationCF.dll not found
Re: Itunes Keeps Crashing During iPod Operation
Posted on: Jan 11, 2011 4:22 PM, by user: b noir -- Relevance: 16% -- Show all results within this thread
Okay. Not an issue with a damaged AVFoundationCF.dll file either then, because the Apple Application Support has been swapped out.
What make and model is the PC? If she's custom/home-built, what make and model of motherboard do you have
Cannot open iTunes
Posted on: Jan 10, 2011 2:52 PM, by user: OuttamyMind -- Relevance: 13% -- Show all results within this thread
Recently I installed the new iTunes 10 for my PC. Now when I try to open it, a dialogue box comes up saying, "This application has failed to start because AVFoundationCF.dll was not found. Re-installing the application may fix this problem."
After clicking ok, another dialogue box comes up saying, "Error 7 (Windows error 126). My computer will not allow me to open up iTunes. What
Lost without music - Itunes 10.1.1.4 fails to open.....HELP
Posted on: Jan 5, 2011 3:38 PM, by user: Dave Gahan's shadow -- Relevance: 11% -- Show all results within this thread
HELP
Since upgrading iTunes around the 16th December (give or take a day or two) i have been unable to launch the program, constantly seeing the following message:
"The application or DLL C:\Program Files\Common Files\Apple Application Support\AVFoundationCF.dll is not a valid Windows image. Please check this against your installation diskette."
Huge issues with itunes install, any help appreciated!
Posted on: Nov 17, 2010 11:15 AM, by user: sherby997 -- Relevance: 9% -- Show all results within this thread
In a nutshell:
Itunes wouldn't open, message: problem with quicktime remove itunes and re-install.
Removed itunes and tried to re-install.
On starting itunes up i got the message: avfoundationcf.dll missing, re-installing may fix this issue, windows error 126.
I have got into start, settings, control, add/remove and tried to delete all
Re: iTunes not installing due to "older version of Apple Mobile Device Support"
Posted on: Nov 15, 2010 5:45 PM, by user: friedliver -- Relevance: 9% -- Show all results within this thread
because AVFoundationCF.dll is missing from your computer. Try reinstalling the program to fix
trouble installing itunes 10.1.1
Posted on: Dec 26, 2010 5:31 PM, by user: celeste tunnell -- Relevance: 9% -- Show all results within this thread
today i recently downloaded the new itunes 10.1.1 and attempted to install it.
the installation process went smoothly and no problems happened until I clicked Finish. i received an error message that said " The application has failed to start because AVFoundationCF.dll was not found.Re-installing it may fix this problem." i pressed OK then another message appeared and it reads "itunes

Here's my standard instructions for trouble with an Apple Application Support dll:
http://discussions.apple.com/message.jspa?messageID=12932050#12932050

Avfoundationcf.dll "Not Found" [FIX]

I discovered how to fix the problem of "avfoundationcf.dll Not Found" in windows xp 32 bit
You just need to Uninstall and Re-Install the 'AppleApplicationSupport"
Just go to this directory "C:\Documents and Settings\All Users\Application Data\Apple\Installer Cache\" and chose the directory "AppleApplicationSupport" with the higher version, my directory is "AppleApplicationSupport 2.1.6" Inside of this directory just run "AppleApplicationSupport.msi" and chose "Remove" when it finish run this file again and chose "Install"
It worked for me
Hope it help :]

This procedure might work or might not work:
Download the free Ccleaner and repair your Registry (repeat until clear)
http://www.piriform.com/ccleaner/download/standard
Uninstall iTunes according to Apple's directions here
http://support.apple.com/kb/HT1925
Use Ccleaner and repair your Registry again just in case.
Then download/install iTunes again from the Apple website
http://www.apple.com/itunes/
Your iTunes content will not be removed,
Please regularly backup your iTunes content to external medium (hard drive, cd/dvd's) using the File>Backup Library in iTunes. Apple will not reissue new copies of content.
(Notice: this post is a copy/paste in a hope that a uninstall/reinstall and repair of your Registry may solve your particular issue, Windows issues are particular difficult to resolve due to multiple factors, so my advice is to be taken into advisement with others recommendations which may be more specific or experienced in resolving your issue. If it or others recommendations solve your issue, please respond back with a "Correct" or "Helpful" or not resolved responses so we can further refine our efforts in trying to successfully assist others. I receive no compensation for product mention.)

HT201210 missing avfoundationcf.dll

When I tried to install my updated Itunes received the follow error message "The program can't start b ecause AVFoundationCF.dll is missing from computer. How do I fix this problem, help, help?!

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 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

AVFoundationCF.dll not found? + Error 7 (Windows error 126)

About a week ago, I decided to upgrade to the newest version of iTunes. Upon trying to install the new version, it said it could not download as there was an error with quicktime. I then uninstallled and downloaded the newest version of Quicktime. The error message went away, however, now I am faced with this meassage everytime I attempt to install:
"An error occured during the assembly 'Microsoft.VC80.CRT,version="8.0.50727.4053"type="win32",publicKeyToken="1fc8b3 b9a1e18e3b",processorArchitecture="x86" Please Refer to Help and Support for more information HRESULT: 0x80073712
Then iTunes goes into "rolling back action" and 'completes' the install.
upon opening itunes, i get an error message saying that windows error 126 has occured or error 7, and that i should reinstall itunes. except i've done this six times now, so it clearly doesn't help.
supposedly the component AVFoundationCF.dll is not found, and the solution to that is REINSTALL, again, that doens't work.
What can I do?
Message was edited by: jashie

Had this problem when I tried to upgrade. I eventually uninstalled all iTunes v9 related products (iTunes, Quicktime, Apple Application Support and Apple Software Update). Then I tried a fresh install of the v10.1x setup. I get the following:
Pop up#1 (iTunes.exe - Unable to Locate Component):
This application has failed to start because AVFoundationCF.dll was not found. Re-installing the application may fix this problem.
Pop up#2 (iTunes):
iTunes was not installed correctly. Please reinstall iTunes.
Error 7 (Windows error 126)
Since I'm on XP SP3 Home Edition, I can't install the System Readiness Tool (only for Vista, 7 and Server 2008, etc.).
So I gave up and unintalled all Apple products (iTunes, Quicktime, AAS, AMDS, ASU). I then went back to an iTunes 9.0.2 installsetup.exe I have. Installed "successfully" and now when I launch iTunes I get the following error pop up:
Pop up#3:
The file "iTunes Library.itl" cannot be read because it was created by a newer version of iTunes.
What can be done now? I'd like to be on the current version, but I can't get around the first 2 pop ups with the methods I've seen posted here.

AVFoundationCF.dll error message at launch after updating to iTunes 10.1

Hey,
I did About>Check for updates and installed the 10.1 update and now whenever I try to open iTunes I get the following error:
The procedure entry point AVCFAssetTrackIsExcludedFromAutoselectionInTrackGroup could not be located in the dynamic link library AVFoundationCF.dll
I have tried downloading the full itunes 10.1 64bit installer from the web and installed that but it still shows the same error.
How can I fix this?
Message title was edited by Host

Had the same problem and this worked for me.
This is for Windows XP and may work for others but I don't know for sure.
I checked my Apple Application Support version under the Add Remove programs and it was 1.3.2
I uninstalled it.
I used WinRar to unpack the iTunesSetup.exe then I installed the AppleApplicationSupport.msi file.
Everything work after that.
Hope this helps.
PS This happened on the last upgrade to iTunes as well so...

Itunes entry point not found AVCFPlayerappliesMediaSelectionCriteriaAutomaticallyKey could not be located in the dynamic linnk library AVFoundationCF.dll

i have tried downloading the new itunes and everything went through but whenever i try to open itunes now i get the error message "The procedure entry point AVCFPlayerAppliesMediaSelectionCriteriaAutomaticallyKey could not be located in the dynamic link library AVFoundationCF.dll" i click ok and it pops up with another message saying that itunes was not downloaded properly and that i have to reinstall it...I've been looking through posts and online for hours and have tried repairing the apple application thingy that was in another post and that did not work. I don't want to uninstall itunes yet for fear of losing all of my music... can someone please help?

Hi,
I had to uninstall completely iTunes to resolve this problem and then install it. Please follow next hyperlink:
http://support.apple.com/kb/ht1925
Regards

Avfoundationcf.dll problem!!!!

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