Power BI Embedded hangs when getting dashboard, reports, etc.

Hello,

Everything was working fine until a few days ago. From what I can tell nothing has changed in the code, but we can no longer retrieve dashboards, etc.

Anything that accesses the client object below just hangs. No error messages or return.

var credential = new UserPasswordCredential(PowerBiUsername, PowerBiPassword);
var authenticationContext = new AuthenticationContext(PowerBiAuthenticationUrl);

Task<AuthenticationResult> authenticationResult = authenticationContext.AcquireTokenAsync(PowerBiSecurityTokenUrl, PowerBiClientId, credential);

authenticationResult.Wait();

if (authenticationResult == null)
{
   return View(new EmbedConfig()
   {
      ErrorMessage = "Authentication Failed."
   });
}

var tokenCredentials = new TokenCredentials(authenticationResult.Result.AccessToken, "Bearer");

using (var client = new PowerBIClient(new Uri(PowerBiUri), tokenCredentials))
{
   Task<ODataResponseListDashboard> dashboards = client.Dashboards.GetDashboardsInGroupAsync(PowerBiGroupId);

   dashboards.Wait();  // HANGS HERE.

   var dashboard = dashboards.Result.Value.FirstOrDefault();
   ...

Much appreciated,

Nick