I can receive but not send iMessages from Mac in Messages app
I know this has been covered, but nothing has worked for me. I’m on the last 17″ Macbook pro 8,3, late 2011, 2.4GHz i7, 8Gb RAM, running High Sierra OS 10.13.6.
When I try to send a message from “Messages” on the Mac I get the familiar “Not Delivered” with the circled red exclamation mark right away.
I’ve looked through dozens of threads on this and other sites and have tried everything I could find including all combinations of signing in and out on the mac and iPhone, restarts, checking forwarding and making sure they have the same preferences.
I did have one interesting thing happen. I logged out of iCloud on the Mac and disabled messages on the iPhone (or maybe logged out all together, can’t remember) and then restarted both iPhone and Mac and logged in only with Messages on the Mac, without logging into icloud for calendar, contacts, etc. and it worked for one message. I then logged back into icloud for all the apps that needed it and it stopped working. In fact I got an error when I tried to access the system pref panel for icloud and had to restart which brought it back. Any ideas?