Hi Dave Henshall,
Thank you for reaching out to us on the Microsoft Q&A forum.
I understand you're encountering an error message "Unable to create an OAuth connection" in Power Platform due to a connection API Policy violation. This message indicates a security policy is blocking the creation of the connection.
Here are couple of reasons that might be causing the issue.
Check Data Loss Prevention (DLP) Policies: The error suggests a DLP policy might be restricting the connection. DLP policies help prevent sensitive data leaks. Contact your IT administrator to understand the DLP policies applied to your environment. They can explain if there are restrictions on connecting to specific services or sharing data outside the organization.
Verify Permissions in Power Platform Admin Center: The Power Platform admin center allows managing access and permissions for various services. If you have admin privileges, access the Power Platform admin center and navigate to the specific connection you're trying to create. Check if there are any permission limitations preventing the connection. You might need to adjust settings or request access from an administrator.
For more details please refer: Set a policy to help prevent data loss - Power Automate | Microsoft Learn
If you encounter any future issues, please feel free to contact us, and we will be pleased to assist you further.
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