Login Loop in imessage and facetime

[storm35]

I installed Sequoia new on my imac. The problem is that imessage and facetime need id Login. Then it starts for 10 seconds and logs out.
Anyone have an idea to solve this problem?

 

[MerlinMac]

No but I got the same problem on my Macs today, both Sequoia and Ventura.

 

[Michael Corfitsen]

Same problem here OS 15.6.1, and no solution.