If you're unable to delete a resource group that contains a project from Azure AI Foundry and the project itself also resists deletion—this is a known issue that can stem from several underlying causes. Azure AI Foundry projects often create multiple interdependent resources such as models, agents, storage accounts, and networking components. If any of these are still active, locked, or governed by policies like deny assignments, they can block deletion. Even if you have Owner or Contributor roles, deny assignments can override your permissions and prevent deletion actions.
Additionally, if your project uses Provisioned Throughput Units (PTUs), there may be backend quota locks or capacity reservations that need to be released before deletion is possible. Some models or services deployed through Foundry—especially those in preview or partner-managed—may not support deletion through the Azure Portal and require CLI or REST API workarounds. To resolve this, start by listing all resources in the group using the Azure CLI and ensure they are deallocated or deleted. Then, attempt deletion using CLI with force-deletion flags. If that fails, check for deny assignments and escalate to your Azure administrator. As a last resort, you may need to open a support ticket with Microsoft, providing details like the subscription ID, region, model type, and any error messages.
Reference : Customer enabled disaster recovery , Azure Migrate Project Deletion Documentation
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