Cannot Sign in to Creative Cloud App

[bfrankphoto_NL]

I keep getting an error saying the Creative Cloud App has been signed out, please sign in again to use adobe applications. The only button is to Sign In, which I press. The window tries to sign in but just goes back to that original error message. 

[John T Smith]

Sign Out When Sign In https://community.adobe.com/t5/Get-Started/sign-in-help/td-p/6071780
-and http://helpx.adobe.com/creative-cloud/kb/unable-login-creative-cloud-248.html
-and 'looping' https://community.adobe.com/t5/Get-Started/Re-quot-Sign-in-Required-quot-Loop/td-p/6257463