C# The remote server returned an error: (407) Proxy Authentication Required.

[S]

Hi,

Is this a firewall issue? if so what should I do to get around it?

Code

static async Task ConnectNative()
{
try
{
string apiUrl = @"https://website/rest/api/2/issue/Key-32";

using (var httpClient = new HttpClient())
{
using (var request = new HttpRequestMessage(new HttpMethod("GET"), apiUrl))
{
var base64authorization =
Convert.ToBase64String(Encoding.ASCII.GetBytes("EmailId:Token"));
request.Headers.TryAddWithoutValidation("Authorization", $"Basic {base64authorization}");

//Error Code
var response = await httpClient.SendAsync(request);

HttpContent requestContent = response.Content;
string jsonContent = requestContent.ReadAsStringAsync().Result;
}
}

}
catch (Exception ex)
{
throw;
}
}

Error details

+ ex {System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required.
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)
--- End of inner exception stack trace ---