In 2018 Apple announced it would turn off Back to My Mac on July 1, 2019 for all versions of macOS. That day has arrived.
On July 1, 2019 Apple plans to shut down its Back to My Mac service. This let users set up a network of Macs that could be accessed remotely.
Back to My Mac was a remote desktop feature you could use to access your Mac’s hard drive on another device.