New OAM provider - No public key found for the provider

Question

I created a new OAM provider for my application with Global scope and was approved. However, when I tested an email, the actionable message didn't show, and the error is "Adaptive card signature validation failed - No public key found for the provider."

My provider was approved 3 days ago. Any help is appreciated. Thank you.

Answer 1

Hi @Tung Tram, 

Thank you for posting your question in the Microsoft Q&A forum. 

To resolve this issue, Microsoft’s support team will need to be engaged. A technical support engineer can conduct a remote session to investigate the situation, verify backend configurations, and run any required synchronization tools. Since this case will likely involve collecting and analyzing logs, it is recommended to raise a support ticket to ensure a smoother and more efficient resolution process. 

The Global Admin should create a service request with Microsoft support to get advanced technical assistance and diagnostics. For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin.      

If you’re unsure who the Global Admin is within your organization, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.     

As community moderators, I don’t have access to internal service logs, backend diagnostics, or engineering dashboards due to privacy and security restrictions. Issues that may involve backend or service related problems can only be fully investigated and resolved by Microsoft’s product engineering teams.  

Thank you again for your time and understanding. I really appreciate your patience, and I’m here to help. Looking forward to your response.    

---

If the answer is helpful, please click "Yes". If you have extra questions about this answer, please click "Comment".   

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread