Using Outlook for Android in business environments for email and scheduling
Dear Redflea,
Thanks for using Microsoft products and posting in the community.
I understand that you encountered an error when launching the Outlook application on Watch Ultra. At the same time, many people have also encountered the same problem.
Firstly, thank you for your exploration and efforts on this issue. It is because of people like you who have driven the progress and improvement of our products.
Regarding the issue you mentioned, as it pertains to Samsung products, it may be a compatibility or other unknown problem. In this situation, it is recommended that you contact Samsung's support personnel to report this issue and have them contact Microsoft to explore and resolve the problem together.
You can also submit feedback on this issue through the following link to help Microsoft better understand the problem. Get in-app help for Outlook for iOS and Android - Microsoft Support
I believe that with the efforts of multiple parties, this problem will eventually be well resolved in the near future. I deeply apologize for any inconvenience caused to you at present.
Wishing you a happy life!
Best Regards,
Addie - MSFT | Microsoft Community Support Specialist