As you're getting an error about access token being expired, could you please let us know which operating system are you working on?
Also, have you tried reinstalling Lightroom CC as it might be showing you an error due to a wrong install?
I too have this problem
I have reinstalled LR CC but the message is still there and i cannot use Lightroom
Anyone know the solution????
I have the same problem!!!!!!!!!!!!!!
Me too!! "your acces toke is expired" ... that's what I got....
Please try the steps mentioned below:
Close Lightroom .
Quit the Creative Cloud App.
Restart the computer
Let us know if it works.