Sign In to Fuze for Office 365 To sign in to Fuze for Office 365: Open Outlook and click Sign In in the Fuze for Office 365 pane. Enter your Fuze username and password. Click Sign-in. You are signed in to Fuze for Office 365. Related articles Fuze for Office 365 System Requirements and Installation Office 365 Connected Account Fuze for Office 365 Overview Fuze Meeting Scheduler for Microsoft Outlook Scheduling a Fuze Meeting in Outlook