Please follow the steps below in the order they are listed until the issue is resolved:

  1. Close  your browser window completely (not just the tab). Do not opt to save the tab information when exiting. Open a new browser window and navigate again to your appropriate Application Hosting Portal URL

     
  2. Open the Windows Task Manager, then click on the Processes tab.  End the process on all iexplore.exe processes.
    Note:  This will end all of your browser windows.  Be sure to save any information you may need in any of the windows. 
     
  3. Delete your cookies and temporary Internet files for your respective browser:

    Internet Explorer (see the "Let me fix it myself" section)
    FireFox