Ive upgraded to premium but still I have an Authorization Failure at the Login to the Marketplace!!!

[Xhevat]

https://marketplace.secondlife.com/authorization_failure?lang=en-US

[Alwin Alcott]

isn't the answer in that window?

 

If you are having problems accessing the Marketplace, please visit support at https://support.secondlife.com.

[Lindal Kidd]

Alwin's right...file a support case.  But also, if you upgraded to Premium just to access the Marketplace, you didn't need to do that.  Basic free accounts have (or should have) full access to the Marketplace.  The problem is something else.