Cannot Enable Messages in iCloud for macOS
2017 13" Macbook Pro
macOS is up-to-date: 10.13.5
2-Factor Authentication is on for all my devices
"Enable Messages in iCloud" Checkbox is missing from Messages -> Preferences -> Accounts
Tried signing out of and back into iCloud. The check box is still missing.
MacBook Pro, macOS High Sierra (10.13.5), 13" 2017 Macbook Pro
I solved this myself. Although I had keychain enabled on my mac and iPad, I didn't have it enabled on my iPhone.
Once I switched on keychain on my iPhone and rebooted my mac, the checkbox became available.
One poster has reported that they logged into their Apple ID, turned off 2FA, then turned it back on again, and the issue was resolved. It's kind of a hassle to do that because you have to re-enter all of your trusted phone numbers again, but you may want to try that: Apple - My Apple ID
Another poster has reported that toggling Keychain off and then back on again in iCloud Preferences cleared up the issue for them.
Best,
GB
Cannot Enable Messages in iCloud for macOS
