How-To Geek

How to Fix the “AppleSyncNotifier.exe Entry Point Not Found” Error


If you’ve unfortunately been forced to use iTunes, you’re probably used to having lots of errors. If you’ve been getting an “AppleSyncNotifier.exe – Entry Point Not Found” error every time you reboot your PC, here’s how to fix it.

The full text of the error says “The procedure entry point xmlTextReaderConstName could not be located in the dynamic link library libxml2.dll.”  Obviously this is not the type of article that will apply to most people, but I personally encountered this error on a short person’s computer, and figured I’d write it up just in case somebody else came across it.

The Problem

This error is happening because every time your computer starts, it’s launching various Apple-related background utilities including AppleSyncNotifier.exe. This utility is attempting to load some information from a database and can’t find the right version of the DLL file, because Apple’s installers are lousy. All we need to do is put the file into the right place, and it’ll be fixed.


Fixing the Error

To fix the problem, we’ll need to move two files from one directory to the other one. So open up the first folder:

C:\Program Files\Common Files\Apple\Apple Application Support

Note that if you’re using 64-bit Windows, you’ll need to look in the C:\Program Files (x86) folder.


Once you’re inside that folder, find these two files and copy them:

  • libxml2.dll
  • SQLite3.dll

You can just use Ctrl+C or the menu to copy the files.


Now switch to this folder:

C:\Program Files\Common Files\Apple\Mobile Device Support

Paste the files into there (you’ll have to accept a UAC prompt), and you should be good to go.

Lowell Heddings, better known online as the How-To Geek, spends all his free time bringing you fresh geekery on a daily basis. You can follow him on if you'd like.

  • Published 11/6/11

Comments (42)

  1. Youngbud

    Why are you using Vista?

  2. Grant

    Better solution: Don’t use things made by Apple ;)

  3. MarkSeattle

    THANK YOU! I couldn’t get iTunes to recognize my iPad for the longest time (it said something was wrong with the driver) and I’ve tried everything from reinstalling iTunes to trying different data cables. This is the only trick I could get to work. :)

  4. The Geek

    The screenshots were from my sister’s computer, which is a little on the ancient side.

  5. Basement Dweller

    Thank you for this work around. I am using W7(enterprise 64 bit) and started getting these startup errors around when I upgraded to iTunes 10.4. I appreciate the knowledge transfer.

  6. Josh

    I don’t think you should have to defend yourself for using Vista.

  7. Al

    Have Win7 64bit I looked under x86 but no Apple folder.

  8. Sam

    THANK YOU! Simple solution for a very annoying message…tried everything to correct this issue to no avail until now. Again THANK YOU!

  9. uttaradhaka

    HTG. How do you read people’s minds? Been suffering from this problem recently.. Thank You

  10. Khaled Alkoud

    thx man it’s clear
    Thank You
    but why this message is come ????

  11. Yen

    I find it enjoyable that you mention specifically that you ” encountered this error on a short person’s computer”
    Please remember that Apple affect people of all heights… :p
    Best be avoided at all costs :)

  12. searl

    thanks for this.Fix works!

  13. vf

    got the same error msg please help.

  14. busyboys

    ok, feeling silly about now but I’ve been searching everywhere for my apple support file, even trying to find my program files is not working. I did step by step……. help, I’m trying to get rid of hte same eror message as detailed in previous threads….

  15. Aggie

    I don’t have a Apple Application folder. Only a Mobile Device Support Folder. ???

  16. TalismanFan

    Worked like a charm. Thanks!

  17. earlset

    thanks this fix works great…..until you install an itunes new version and you have to repeat the process.

  18. Trudie

    Thank you!!

  19. pammy

    Since I needed to access these files by using the path C:\Program Files (x86)\Common Files\Apple\Apple Application Support. do I need to paste them in the C:/Program Files (x86)/Common Files\Apple\Mobile Device Support OR just in the C:\Program Files\Common Files\Apple\Mobile Device Support?

  20. jean

    hey thanks for the info…so far so good. I was tired of that apple synchnotifier message and the annoying sound that comes with it. I followed your advice, restarted my computer, and alas, no error message with annoying sound! Hooray for you! I am so glad there are smart “geeks” in the world like you! Rock on!

  21. Calico

    Fantastic…thank you. Reinstalling newest version of itunes did not work.

  22. virginia

    I’m getting the following message (on windows XP) from “Apple Sync Notifier.exe
    “The instruction at “0x003653a0” referenced memory at “0x003653a0″ The memory could not be read”
    Will the fix u give above for
    Entry Point Not Found” error work for my problem too. I don’t like to mess around with moving files w/o some guidance. Thanks (I really like your clear and well designed page :-)

  23. stacie


  24. Sharon

    I get this message:

    The procedure entry point SQlite3_wal_checkpoint could not be located in the dynamic link library SQLite3.dll.

    Do I do the same thing for this too as far as moving those 2 files? This is aggravating.

  25. Bakkore

    Thanks a bunch! You are a life saver.

  26. Buzz56

    Thanks …easy to understand and follow …even for me. Fixed an annoying little prompt I’ve had for some time.

  27. Sofia

    Hi, thank you very much for that i just did it, i had the same problem, was getting annoying

  28. Shane

    I was totally fed up with that notice popping up, your fix worked a treat, Thanks.

  29. David

    Your fix was right on the mark!!!!! Thanks!

  30. Jenny

    I don’t have the folder Apple Application Support, All I have is Mobile Device Support..

  31. Core Logic

    Ok, with Windows Vista Home Premium 32 bit O/S, Since I don’t use IPhone, IPad etc I went to the control panel and uninstalled Mobile Me (Apple App), and error went away! Just an easy fix here if one does not use Apple’s devices!

  32. N

    Thank you so much that was really getting on my nerves. I hate iTunes with a vengeance but have had to use it so…….

  33. fishdrinking

    Thanks~ and Merry X’mas!

  34. Liz

    Thankyou. I am trying to follow this but I am getting refused permission to paste the files even though I am the owner and administrator. I have tried to change permissions but they are greyed out. Any advice on this is welcome.

  35. Mick

    Thank you…works perfectly now. May this forum help find solutions for you as you have helped others.

  36. Wilson Toussaint

    Thanks for posting such a clear and concise solution to this problem! I just used it to fix my mother’s computer without incident. Very helpful post!

  37. Jane

    Thank you so much, now I’m looking for another problem to be sorted by you !!!

  38. KAREN

    Thanks! This was easy to do and worked like a charm. I had seen similar directions online but yours was the only one I saw that mentioned that you have to look in the x86 program files to find what was needed. Thanks again!

  39. Amy

    Thank you!! It worked. I personally just got rid of the error message when I started up the computer because I know how iTunes is about this stuff and it didn’t bother me beyond some minor irritation but I’m giving this computer to a family member who’s much more wary about technology and I didn’t want her to freak!

  40. Sheron

    Thank you for this quick and easy fix.
    I was in the process of trying the solution on the Windows site which became too cumbersome so decided to look further and came upon your suggestion. Gonna send a note to microsoft as they should pay you to add this to their site.

  41. BigDee

    Thankyou!! it was a cinch!

  42. Jesse

    I have a similar error; however it is referring to icuin40.dll. The message reads: AppleSyncNotifier.exe – No Entry Point Found. The procedure entry point ucal_getDefaultTimeZone_4_0 could not be located in the dynamic link library ucuin40.dll – Any suggestions??


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