How do I reactive my iMessages on new MacBook Air?

[iMore Question]

How do I reactive my iMessages on new MacBook Air

I get error message saying that there is an error with network connection but this isn't the case as I have another MacBook Air and no issues with it. I try to reactivate this one but constant error message - not sure how to correct as anything available on internet doesn't work

 

[bamf-hacker]

Re: How do I reactive my iMessages on new MacBook Air

I had this issue yesterday with my Daughters iPhone. I had to log out of iCloud, iMessage and FaceTime. The reboot and sign in to everything again. Then it stuck.