Business today doesn’t happen in silos. Workflows span across multiple apps, from email to CRM to collaboration tools. Outlook add-ins play a key role in keeping teams productive, but they too often rely upon legacy authentication methods that weren’t designed for this new, interconnected world. Microsoft is taking steps to champion security by replacing traditional Exchange Online tokens with Nested App Authentication (NAA). Thanks to building on top of Microsoft Entra ID, NAA supports modern authentication protocols and zero-trust policies while providing a streamlined single sign-on experience.
To help ensure a seamless transition, the App Assure team has been actively working with software vendors, supporting their efforts to update Outlook add-ins and ensure these remain functional and secure without interrupting customers’ experiences.
Read the full announcement here: App Assure puts Security first for Microsoft Outlook Customers
Original Publication: Microsoft 365 Blog, April 2nd, 2025
Microsoft