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HttpClient Authorization Header Configuration


I’m using a HttpClient to access a REST API. However, I’m having difficulty configuring the Authorization header. The header must be set to the token I obtained after completing my OAuth request. I came across some.NET code that suggested the following:

httpClient.DefaultRequestHeaders.Authorization = new Credential(OAuth.token);

In WinRT, however, the Credential class does not exist. Anyone know how to change the Authorization header?

Asked by Stephen Hynes

Solution #1

As a result, here’s how to go about it:

httpClient.DefaultRequestHeaders.Authorization =
    new AuthenticationHeaderValue("Bearer", "Your Oauth token");

Answered by Stephen Hynes

Solution #2

request.DefaultRequestHeaders.Authorization = 
    new AuthenticationHeaderValue(
        "Basic", Convert.ToBase64String(

Answered by TheWhiteRabbit

Solution #3

I’m seeking for a solid solution to this problem, and I’m asking myself the same question. Hopefully, my response will assist anyone who is experiencing the same issue as me.

using (var client = new HttpClient())
    var url = "{tenant}/api/identity/v1";
    client.DefaultRequestHeaders.Add("Authorization", "Bearer " + accessToken);
    var response = await client.GetStringAsync(url);
    // Parse JSON response.

reference from

Answered by Willie Cheng

Solution #4

As it is a good practice to reuse the HttpClient instance, for performance and port exhaustion problems, and because none of the answers give this solution (and even leading you toward bad practices 🙁 ), I put here a link towards the answer I made on a similar question :

Here are some resources for learning how to use HttpClient properly:

Answered by Philippe

Solution #5

I have a suggestion for you:

HttpClient.DefaultRequestHeaders.Add("Authorization", "Bearer <token>");

After that, you can utilize it as follows:

var response = await client.GetAsync(url);
if (response.IsSuccessStatusCode)
    responseMessage = await response.Content.ReadAsAsync<ResponseMessage>();

Answered by Amankhani MohammadJavad

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