If you were an early adopter of the Apple TV, it’s long past time for an upgrade. Apple has labeled the device as obsolete since 2015, but they’re putting the last nail in the coffin. Starting in May, a security update will prevent the first-gen Apple TV from accessing the iTunes store.
Once the update rolls out, you won’t be able to launch iTunes, make new purchases, or re-download old purchases you’ve made. If you want to continue to have access to iTunes, you’ll need to upgrade to at least a 2nd-generation Apple TV or (preferably) a later model.
Apple is also phasing out iTunes for Windows XP and Vista devices. This shouldn’t be much of a surprise, since Microsoft has ended support for XP and Vista itself already. If you’re using iTunes on a computer running either of these versions of Windows, you won’t be able to make new purchases or re-download old purchases, but you can still play anything you’ve already downloaded.