Why graph api does not work in VSTO?

Question

I am trying to work with graph API.

When I try to get the token, using the following code, on Winform application everything is working,

where running the same code from VSTO outlook adding, I get An error occurred while sending the request - An existing connection was forcibly closed by the remote host

what am I missing? or doing wrong?

the code is:

var app = PublicClientApplicationBuilder.Create(ThisAddIn.clientId).WithRedirectUri("http://localhost").Build();

string[] scopes = new string[] { "User.Read" };

var accounts = await app.GetAccountsAsync();

AuthenticationResult result = null;

try

{

          result = await app.AcquireTokenInteractive(scopes).ExecuteAsync();  // hear i get the error 

} catch (Exception ex)

{ MessageBox.Show($"Error: {ex.Message}"); }

Answer 1

Hi Bennym72,

Graph API developing queries are not supported in this community. I would suggest you reach to Microsoft Graph - Microsoft Q&A for assistance. Experts there shall have more knowledge and experience on this topic.

Best Regards,

Ryan