Google Calendar experiencing intermittent login issues when visiting from

Incident started at Oct 14 04:43 am

Oct 14 06:56 am: Visiting (which redirects to may give a 404 error.  Google technicians are working to resolve the issue.
Work around to log in to Google Calendar:
Login to first, then go to the apps picker (the 9 square icon) and click on calendar
go to (nothing else) and login that way
Next update at 8:00am

Oct 14 08:04 am: UPDATE: Google technicians have resolved the issue with Google Calendar.