When linking your AWS account to Tailwarden via a CloudFormation stack, it's crucial to ensure that STS (Security Token Service) is enabled in the region where the stack is deployed. Tailwarden utilizes STS to assume the role created by the stack, facilitating the connection.

If STS is not active in your chosen region, Tailwarden cannot establish the connection. Fortunately, enabling STS is a quick and straightforward process. As demonstrated in this video, simply navigate to IAM in your AWS console, click on "Account Settings," and you'll find the option to activate STS at the bottom of the page. This minor adjustment ensures a seamless integration with Tailwarden.