The Single Sign On (SSO) does not work well when the url is bookmarked.  Sometimes a date is inserted in the bookmark automatically upon creation.  When you try to access the bookmark after that date, it will see it as expired.

To fix this issue, avoid bookmarking the SSO site.  You can get to it by going to the "Log into" pull down menu on the loyno.edu home page

or

Simply type in sso.loyno.edu in the url space of your browser.  After you type it in once, it will autofill the next time.

Remember when logging into the SSO user everything before the @ symbol of your email address as the username.