First, try to log in to Sphere again.

If the error message persists:

Delete the temporary files and cookies from your web browser. In the Internet Explorer browser click on Tools > Internet Options, then click on the Delete button under Browsing History to delete Temporary Internet Files, Cookies and History. You will need to close all open browser windows after this, then open a new one to log back into your Sphere account with. If the issue continues there could be an issue with permissions. Close out of all browser windows, right click on the Internet Explorer icon and click Run as administrator.