change Creo 3.0 from offline to work on-line

1. A similar question - "Cannot Connect to Server From Creo. need workspace?": https://community.ptc.com/t5/Windchill/Cannot-Connect-to-Server-From-Creo-need-workspace/td-p/408804

2. Some articles about this problem: 

• "Attempting to register the server as a Guest user fails with error "You have no workspace to register. You cannot register this server without a workspace." in Creo Parametric": https://www.ptc.com/en/support/article/CS76319
• "Unable to add server and set active workspace gives error "You have no workspace to register, you must have Workspace to register"": https://www.ptc.com/en/support/article/CS157925

I have found it easier to create a workspace from the external Windchill browser hen connect and register your Windchill server to Creo with the existing workspace.