could not sign in to iMessage an error occurred during activation

brainwave89

macrumors 6502
Original poster
Jul 7, 2006
404
4
After installing a fresh copy of Mojave on my mid-2010 I received the following message.

could not sign in to iMessage an error occurred during activation.

The machine is listed under devices when I log onto iCloud.com with my account.

Any suggestions on how to solve this error is appreciated.