Why can't I log into iMessage on my Mac?

[iMore Question]

Hi there,

All my contacts seem to be offline (my mac won't log into iMessage). My software is up to date. My computer was recently serviced, so I know it's all good. Would love some help with this. Thanks!

D

 

[phreddyl]

Re: can't log into iMessage on my mac

Did you log into it? May need to enter your password