Office addin getAttachementContentAsync failed to load CORS issues
问题 I am working on an outlook plugin and I want to send the attachements from an email read item to my backend. I am trying to use the method getAttachementContentAsync for each attached file, but it fails. Here is the error message: Uncaught (in promise) TypeError: Failed to fetch Access to fetch at '' (redirected from '') from origin 'https://outlook.live.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response