Showing results for Legacy Exchange - Microsoft 365 Developer Blog

In April, we announced that Exchange tokens will be turned off by default for all tenants in October 2024. This has been updated and you should have more time to move your Outlook add-ins from Exchange tokens to NAA.

Announcing the public preview of Nested App Authentication (NAA) and that legacy Exchange user identity tokens and callback tokens will be turned off by default for all Exchange Online tenants in October 2024.