Apple rolled out a new version of iTunes for Windows on Monday alongside iOS and iPadOS 15, but it should be avoided at all costs if your system isn’t set up in English. iTunes no longer works under any other language.
The problem seems to affect the version 184.108.40.206 version of iTunes no matter where it’s downloaded from — the Microsoft Store or directly from Apple — which means it’s not currently possible for some users to sync their devices.
iTunes for Windows only works in English
Once you’ve installed iOS or iPadOS 15 on your Apple devices, you need the latest version of iTunes to sync them with a Windows PC. But if your system language isn’t set to English, you’ll see an error when you attempt to open it.
“iTunes cannot run because some of its required files are missing,” the error message reads. “Please reinstall iTunes.” However, reinstalling iTunes doesn’t fix it; only changing the system language to English solves the problem.
This is a temporary workaround. If you change the system language back to anything other than English, iTunes will no longer open again. It appears that only another update from Apple is going to eliminate the problem completely.
It’s not yet clear when we can expect that to arrive since Apple hasn’t acknowledge the issue. We’ve asked for a comment and we’ll update this post if we get a response.