Hi WTG,
The error message indicates that the user with the specified object ID does not currently have the necessary permissions to deploy a fine-tuned model within the specified Cognitive Services account. Even though you're using an admin user, it’s possible that recent changes to role assignments, Azure policies, or resource configuration may have impacted your access.
To resolve this, please ensure that the user is assigned the appropriate role—such as Cognitive Services Contributor or a custom role with model deployment permissions—on the specific Cognitive Services resource. You can check and assign roles by navigating to the resource in the Azure portal, selecting Access Control (IAM), and reviewing the role assignments. Additionally, verify that local authentication (key-based access) is enabled if your deployment relies on it, as disabling it may also lead to permission issues. If you were previously able to deploy successfully and nothing has changed from your end, it's worth checking with your subscription administrator or reviewing recent activity in Azure Activity Logs for any role or policy modifications.