Try going into iMessages, go to File: Preferences, click Accounts Tab
Make sure you are signed it, and all the appropriate boxes area checked.
Note, the tab "Enable iMessages on iCloud is not working yet...
Go to your iPhone and verify all the correct settings are enabled. Some were deselected on my iPhone 7 when I installed High Sierra.tried all that, can't understand what is happening?
Go to your iPhone and verify all the correct settings are enabled. Some were deselected on my iPhone 7 when I installed High Sierra.
Handoff, enabling messaging and text forwarding to other devices, etc.Which settings are you referring to? I have all options on for iCloud?
Sorry, had this happen to me - just saw your thread. I suspect it's a race condition when you have some Mac's running Sierra and some running High Sierra with the same iCloud account - it can mess up the credentials.
Presuming you have 2FA enabled (everyone should) - go to the appleID page: https://appleid.apple.com/
You're going to need to sign all (well, all but one initially) out of iCloud and remove them from your list of devices on the appleID page. You leave the one authorized / signed in, so it can authorize your 2FA. Once you've cycled through all but one, then do the same with that last device.
Note: iCloud may make you change your AppleID password (yes, I know, onerous) - it did with me (so it obviously knew something was out of sync).
Now that you fixed your iCloud credentials, just make sure that all of your iMessage setups are using your AppleID as well as your cell number (with your cell selected as start new conversations from).
Sorry, had this happen to me - just saw your thread. I suspect it's a race condition when you have some Mac's running Sierra and some running High Sierra with the same iCloud account - it can mess up the credentials.
Presuming you have 2FA enabled (everyone should) - go to the appleID page: https://appleid.apple.com/
You're going to need to sign all (well, all but one initially) out of iCloud and remove them from your list of devices on the appleID page. You leave the one authorized / signed in, so it can authorize your 2FA. Once you've cycled through all but one, then do the same with that last device.
Note: iCloud may make you change your AppleID password (yes, I know, onerous) - it did with me (so it obviously knew something was out of sync).
Now that you fixed your iCloud credentials, just make sure that all of your iMessage setups are using your AppleID as well as your cell number (with your cell selected as start new conversations from).
You're still running in what I'll call "mixed mode" - devices running the new iMessage and not. When this happened, the two MacBooks I had upgraded to 10.13 were removed from my AppleID devices and not brought back (rolled one of them back to 10.12 due to what 10.13 broke on it) - the other one hasn't been turned back on yet (and will be rolled back when it is - so it doesn't recreate the problem).Unfortunately this doesn't fix the issues for me.
I have a mixture of iOS10, iOS11, macOS10.12 and macOS10.13 and iMessages cannot be sent from the macOS10.13 machine. They can however be received and standard SMS can be received and sent...
Did you upgrade everything else to iOS 11 and 10.13 yet? Like I said - it seems there's a race condition when you're running a mix of old and new iMessage clients that messes up your iCloud authentication. I would have upgraded the iOS devices first, then the Macs.
If the other devices are working (and upgraded) and it's just this one, remove it from your iCloud account. You'll have to go through and login everywhere on it again, but it should hopefully fix it.
You need to get everything on the same rev of iMessage to make sure you don't get corruption. (everything iOS 11 and MacOS 10.13)I removed Mac from device list on appleid page and then logged in on my icloud of Mac and still imessage not working.
I get the message an error occurred in authentication.
Did you upgrade everything else to iOS 11 and 10.13 yet? Like I said - it seems there's a race condition when you're running a mix of old and new iMessage clients that messes up your iCloud authentication. I would have upgraded the iOS devices first, then the Macs.
If the other devices are working (and upgraded) and it's just this one, remove it from your iCloud account. You'll have to go through and login everywhere on it again, but it should hopefully fix it.
You need to get everything on the same rev of iMessage to make sure you don't get corruption. (everything iOS 11 and MacOS 10.13)
If you delete all of your devices back to just your iPhone being the only authorized device in iCloud, does iMessage function properly on that iPhone?
(you don't want to go back to 0 devices, as you won't be able to do 2FA).
I'd be starting with the iPhone - make sure that everything works properly on it (iMessages, iCloud, Find my iPhone, FaceTime).
Then you slowly, one by one, add your other devices (again, I'd do iOS devices first).
You guys are removing the devices from the Apple ID site, right? (not find my iPhone).
I'd be starting with the iPhone - make sure that everything works properly on it (iMessages, iCloud, Find my iPhone, FaceTime).
Then you slowly, one by one, add your other devices (again, I'd do iOS devices first).
You guys are removing the devices from the Apple ID site, right? (not find my iPhone).