No connection to Adobe-server under OSX 10.8.5 for signing in CC

Ciao!

Since 5 days my powermac (Mountain lion) cannot connect to Adobe server. Prior to that CC with ALL Adobe CC Programs was running 5+ years without any problems. I did not change anything on the mac.

Effect: I can not use my CC Programs (Teams account).

I checked all help center topics: Internet connection, firewall, Time/clock, etc. All is perfect. But CC denies to log in.

What can i do?

Somethink change regarding compatibility while tha last weeks?

Thanks in advance.

Freddy

PS:

I can check in via chrome to my account. User and Password is also correct!