In case that your OS is Windows 7 (64 bit) and you have got the message as the following:
AppleSyncNotifier.exe – Entry Point Not Found The procedure enrty point xmlTextReaderConstName could not be located in the dynamic link library libxml2.dll
1. Open windows explorer, go to location
C:\Program Files (x86)\Common Files\Apple\Apple Application Support
2. Copy file “libxml2.dll”
3. Open new windows explorer, to to location
C:\Program Files (x86)\Common Files\Apple\Mobile Device Support
4. Paste file “libxml2.dll” to the location.
5. Reboot your computer, it should not display those message, it should be clear.