Azure Devops Build pipeline suddenly fails with authentication error - "Error: Can't resolve Entra ID/OAuth authority for "POWERPLATFORM ENV URL"

[sribhashini]

We have powerplatform environments set up and azure build release pipelines to support deployments. We have service connection which has environment url as server and authenticates with federated credentials. Our pipelines used to work fine but suddenly started to break at build pipeline with below error. Please help us as we have critical releases planned.

"Error: Can't resolve Entra ID/OAuth authority for /api/data/v9. Failed to get response from: /api/data/v9; error: An error occurred while sending the request.; details: The underlying connection was closed: An unexpected error occurred on a send. (SendFailure)"