The Procedure entry point Could not be located in the dynamic Link Library

There are several different scenarios that could lead up to the error, but typically it arises because an older version of the .dll has been copied into the wrong folder to workaround a different problem, and now after updating iTunes the outdated .dll that gets called cannot handle the request made of it.

For general advice see Troubleshooting issues with iTunes for Windows updates.

The first box outlines the fix I suggested back in January. For some people it is all they need to do.

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

Hi,

I have a similar, but slightly different error. Running iTunes 12.1.2.27 on Windows 8, It reads:

The procedure entry point ADAdServer_SetPropertiesforAdRequest could not be located in the dynamic library link C:\Program Files\iTunes\iTunes.dll

It doesn't say what kind of error this is. I've tried installing individually the Apple Application Support and Apple Mobile Device Support items individually, as was suggested elsewhere for a similar error, but with no luck. iTunes still won't open.

Should I follow the user tip here (Troubleshooting issues with iTunes for Windows updates) or is there something else going on?

Such errors may be fixed by deleting the named file and then repairing the component it belongs to, in this case iTunes itself. If that doesn't work run through the steps in the second box of the user tip.

tt2

I fixed mine by deleting the entire itunes folder inside program files x86

C:\Program Files (x86)\iTunes

And also the entire Itunes folder in original program files

C:\Program Files\iTunes

I then reinstalled Itunes and it worked perfectly.

This seems to occur because uninstalling Itunes leaves some of the old .dll files which cause issues so deleting them all and reinstalling appears to have worked perfectly.

Alternatively this also appears to have repaired a pre-existing Itunes store crash issue with this program.

I must insist that you attempt this at your own risk however it has worked faultlessly for me.

A faster fix will be to delete:

C:\Program Files\iTunes\QTMovieWin.dll (32 bit Windows) or

C:\Program Files (x86)\iTunes\QTMovieWin.dll (64 bit Windows)

tt2

i dont have that file in the iTunes folder..even when i reveal hidden files