When you get the error page, try telling your browser to reload the page.
Many users are getting the following error this morning when they try to login to Google Calendar.
This service cannot be accessed because your login credentials are not yet valid
If you see that error message, just tell your browser to reload the page ( F5 on windows, command R on a mac ) and you should see your calendar load.
So far we don’t know the cause of the error but we suspect it is something on Google’s end and they will hopefully fix it soon.
I still can not log onto my google calendar. I try the refresh but it does not work. Is there anything else I can do?
try to empty your browser cache before go on