ACE, the Ithaca College portal that provides access to Parnassus, Argus, Homer, IC Workflow and Advance, has been experiencing intermittent connectivity issues. ITS is actively working to identify and correct the problem. If you encounter this problem, a temporary solution is to wait about 10 minutes and then try again.
https://www.ithaca.edu/intercom/article.php/20150127160322773