If your Oracle account becomes locked you will need to contact the Middlebury Helpdesk to have it reset. Once this has been done...
Use Firefox, the recommended browser for Oracle.
Bookmark the GMHEC app panel rather than the Oracle login site itself. Use https://myapps.microsoft.com/?tenantid=gmhec.org or http://go.middlebury.edu/oracle.
This log-in screen occasionally crops up -- if you see this, you have to click the Company Single Sign-On button.