Thank you for posting your query on Microsoft Q&A.
The error message "InternalServerError" with a possible cause of "Forbidden" suggests that you may not have sufficient permissions to access the resources you're trying to use in your Azure Migrate project.
Here are a few things you can try to resolve the issue:
- Check the Azure Active Directory (AD) permissions for the user that you're using to sign in to the Azure portal. Make sure that the user has the necessary role-based access control (RBAC) permissions for the subscription and the resources you're trying to access.
- Check the Azure policy settings for your subscription. There may be a policy in place that's blocking the creation of AKS clusters.
- Try to use a different Azure AD user or an Azure AD service principal with the necessary permissions to sign in to the Azure portal and run the migration.
- If you're using Azure Migrate in a multi-tenant environment, check if there are any restrictions or limits in place that may be affecting your ability to create AKS clusters.
- Check the Azure AD and AKS logs for any errors or warnings that may provide more information about the cause of the issue.