Impossible to delete CloudFormation Stacks in DELETE_FAILED state

There could be many reasons for stack struck in “DELETE_FAILED” Status.

Check resource dependency – Review the resources being used in stack. There might be dependency with those resources and not allowing you to delete the stack.

Permission issue – There might be the permission issue with resources being used or restricted to delete those resources. You can update the stack policy if it related to permissions.

Try with AWS CLI Command – Try using AWS CLI command aws cloudformation delete-stack to see if it can provide you more details.

Manual deletion of resources – If you want to remove the resources along with stack, first try to delete resources manually through AWS console or using AWS CLI Command. If manual attempt is successful try again to delete the stack. Please be mindful of the removing any resources manually as they might be critical resources. Always understand the implication of deleting any resources before deleting them.

AWS support center – if you do not find any success to delete a stack, reach out to AWS support center to get the guidance or assistance.