Microsoft is continually evolving its products to deliver greater functionality, stronger security, and better experiences for users. That evolution is now underway for Outlook as we transition from classic Outlook to the new Outlook for Windows, a move that accelerates access to innovations like Copilot and other AI-native tools essential for success in today’s business landscape.
Users are already asking for their most critical productivity apps to be ready for this change. And just as App Assure helped software companies transition from Exchange Tokens to Nested App Authentication earlier this year, we now stand ready to help you make the transition to new Outlook seamless and worry-free.
Benefits of new Outlook
Outlook is your organization’s hub for communication and collaboration. With the transition from COM add-ins to Web add-ins, new Outlook for Windows empowers both customers and partners alike.
- Customers receive a streamlined interface that provides a consistent user experience across devices and AI-native tools built directly into Outlook, all while benefiting from a lower total cost of ownership and quicker access to new features.
- Partners benefit from Microsoft’s deep investment in extensibility, allowing them to reach the entire Outlook audience whether those users are working via Windows, Mac, Mobile, or web.
Read the full announcement here: App Assure Powers Seamless Transitions for the new Outlook
Original Publication: Microsoft M365 Blog, November 18th, 2025
Microsoft