Elastic Search 7 on Microsoft Azure Connection Failure

[JSK1304 (sathish)]

I am new to Elasticsearch and I have created a 1 node Elasticsearch cluster in Microsoft Azure using the "Elastic Stack" template.
But I am not able to connect to the cluster using connection pool or using a single node connection.
var uris = new
{
new Uri("https://hide.dev.es.canadacentral.azure.elastic-cloud.com:9243")
};

var connectionPool = new SniffingConnectionPool(uris);

        var settings = new ConnectionSettings(connectionPool)
            .SniffOnConnectionFault(false)
            .SniffOnStartup(false)
            .RequestTimeout(TimeSpan.FromSeconds(500))
            .PingTimeout(TimeSpan.FromSeconds(500))
            .MaximumRetries(5)
            .DefaultIndex("people");

        var client = new ElasticClient(settings);

Getting the below error

Invalid NEST response built from a unsuccessful (401) low level call on HEAD: /Preformatted text

Audit trail of this API call:

• [1] PingFailure: Node: {URL} Exception: PipelineException Took: 00:00:01.2884735

OriginalException: Elasticsearch.Net.ElasticsearchClientException: Failed to ping the specified node.. Call: Status code 401 from: HEAD / ---> Elasticsearch.Net.PipelineException: Failed to ping the specified node. ---> Elasticsearch.Net.PipelineException: Could not authenticate with the specified node. Try verifying your credentials or check your Shield configuration. ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.

at System.Net.HttpWebRequest.GetResponse()
at Elasticsearch.Net.HttpWebRequestConnection.Request[TResponse](RequestData requestData)
--- End of inner exception stack trace ---
at Elasticsearch.Net.RequestPipeline.ThrowBadAuthPipelineExceptionWhenNeeded(IApiCallDetails details, IElasticsearchResponse response)
at Elasticsearch.Net.RequestPipeline.Ping(Node node)
--- End of inner exception stack trace ---
at Elasticsearch.Net.RequestPipeline.Ping(Node node)
at Elasticsearch.Net.Transport1.Ping(IRequestPipeline pipeline, Node node) at Elasticsearch.Net.Transport1.Request[TResponse](HttpMethod method, String path, PostData data, IRequestParameters requestParameters)
--- End of inner exception stack trace ---

Audit exception in step 1 PingFailure:

Elasticsearch.Net.PipelineException: Could not authenticate with the specified node. Try verifying your credentials or check your Shield configuration. ---> System.Net.WebException: The remote server returned an error: (401) Unauthorized.
at System.Net.HttpWebRequest.GetResponse()
at Elasticsearch.Net.HttpWebRequestConnection.Request[TResponse](RequestData requestData)
--- End of inner exception stack trace ---
at Elasticsearch.Net.RequestPipeline.ThrowBadAuthPipelineExceptionWhenNeeded(IApiCallDetails details, IElasticsearchResponse response)
at Elasticsearch.Net.RequestPipeline.Ping(Node node)

Request:

<Request stream not captured or already read to completion by serializer. Set DisableDirectStreaming() on ConnectionSettings to force it to be set on the response.>

Response:

<Response stream not captured or already read to completion by serializer. Set DisableDirectStreaming() on ConnectionSettings to force it to be set on the response.>