confirm that your account shows the subscription(s) you expect (and that the adobe id used in the next step is the correct one) by logging in here and checking your subscription status, https://www.adobe.com/account.html
then, if it is current, sign out and then back in to your cc desktop application using the same adobe id used with the above link: http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html
1)Navigate to C:\Windows\System32\drivers\etc and look for file named hosts inside etc folder.
2)Copy the hosts file to Desktop and open the same with notepad.
Check whether you can see any Adobe related entries inside Hosts file like 127.0.0.1 activate.adobe.com.......etc??
Good Morning / Afternoon,
@kglad: I've tried, but unfortunately doesn’t worked. Thanks for answer!
@Brucgovn: That worked, now I can open Photoshop and Lightroom without any problem. thank you very much!
Thanks for your answers,
what do you do after you see 127.0.0.1 activate.adobe.com in the host file on notepad?
comment it out.