Starting from iOS 9, you can no longer use iTunes to sync iPhone notes with Outlook on your PC. Nevertheless, you can still transfer notes between iPhone and Outlook via CopyTrans Contacts.
Use CopyTrans Contacts instead of iTunes
Here’s how to use CopyTrans Contacts in order to:
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If you rely on contacts, calendars and notes synchronization with Outlook, use CopyTrans Contacts as a reliable alternative to iTunes.