At its Build developer event earlier this year, Microsoft said Apple was planning to bring its iTunes app to the Windows 10 store, making it easier for Windows users to find the software.

At the time, Microsoft said the app would be available in the Windows Store "by the end of this year," a deadline Apple now says it's not going to be able to make.

"We have been working with Microsoft to deliver the full iTunes experience to our customers and we need a little more time to get it right," an Apple spokesperson told ZDNet

Both companies are still working to get iTunes into the Windows Store, according to ZDNet's sources, but there is no updated timeline on when it might be available. Apple also did not provide details on why it's taking so long to wrap up the transition to the Windows Store.

Most Windows users can download the iTunes software outside of the Windows Store, but Windows 10 S users will need to do without iTunes for the time being as that's a version of Windows that can only run apps available in the Microsoft Store.