I just signed up for an E3 account and successfully migrated our email to Exchange Online. I can send and receive mail through the Outlook desktop client and by logging on to mail.office365.com. However, when I access my Office 365 account through the Office 365 portal, the options for Outlook, Calendar, and People are grayed out. When I access the account through mail.office365.com, the links are active until I click on the link for OneDrive. After accessing OneDrive, the links are grayed out again. This is happening on multiple user and admin-level accounts.
What can I do to make these links active at all times?