I am working on an Outlook add-in that authenticates the user against Azure AD and launches requests to SharePoint Online sites. The application uses AngularJS and uses the ADAL.js and ADAL-Angular.js libraries for the authentication process. The application works well in the browser, but does not run during the authentication process when using the version of Outlook in Windows.
As soon as the user enters his username and password in the add-in in Outlook (Windows), and the Internet Explorer window appears with the message below:
AADSTS90056: This endpoint accepts only POST requests.
Error screenshot
Has anyone encountered this issue? I followed Office Dev tutorials (see below) but still no luck ...
https://github.com/OfficeDev/O365-Angular-GettingStarted
source
share