Once macOS has booted up again, open the iMessage app and attempt to send another message.

Click Restart to carry out the reboot process.Click on the Apple menu, featuring the Apple logo, that can be found in the top left of the Mac display.That could be enough to get iMessage to work on Mac again. A restart will wipe away current software states, including any tricky misbehaving code. Restarting your Mac may be enough to clean out the cobwebs and get iMessage working again. Your first port of call if you find iMessages are not delivering on Mac is also the simplest. Making sure it’s not a problem with Apple.Making sure your internet connection is working.Try the following methods to fix iMessage on your Mac: To give your Mac a deep clean, while freeing up available disk space in the process, consider downloading MacKeeper. Solving some Mac problems may come down to the possibility of malware on your computer. There are a number of troubleshooting steps you can take to get iMessage to work again on your Mac. If your iPhone messages are not showing up correctly on your desktop or laptop computer, don’t panic. Sending iMessages from your Mac is easy - unless something goes wrong and it stops working.

Messages on mac not working right