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Error 7 (127) installing in Windows 7

I an error message after running the update on iTunes, now I receive the below error when I click to open my iTunes:


iTunes.exe - Entry Point Not Found

The procedure entry point kCMByteStreamNotification_AvailableLengthChanged could not be located in the dynamic link library CoreMedia.dll.


iTunes was not installed correctly. Please reinstall iTunes.

Error 7 (Windows error 127)


I re-installed iTunes and selected to repair and am still receiving the same error.


If I uninstall iTunes completely, will I lose all my music/settings/apps?


Looks like lots of issues going on out there, but was not sure if anyone got this same error????

Windows 7

Posted on Oct 14, 2011 7:51 PM

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Posted on Oct 15, 2011 6:52 AM

I have received the exact same message, and I am also running windows 7. I have tried several times to reload ITunes 10.5 from the Apple website, using the repair button.

8 replies

Oct 17, 2011 6:03 AM in response to mightymouse23

I am not an expert, but this worked for me.


Make sure that all of Windows Security packs, and Windows updates are installed. I had 82 that had not run due to my firewall security being to high.


Once these updates were installed, I uninstalled iTunes, and then reinstalled. It worked the first time. the only thing I lost was my backed up iPhone data.

Error 7 (127) installing in Windows 7

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