Getting error: Retry failed after 4 tries. Retry settings can be adjusted in ClientOptions.Retry

Hello everyone,

I have got the following code that generate a Token to get access to ChatGPT

 Protected Function GetAccessToken(scope As TokenRequestContext, c As CancellationToken) As AccessToken
   Dim Credential As ClientSecretCredential
   Dim CredentialOption As ClientSecretCredentialOptions
   Dim RequestContexts As String() = {"api://xxxxxxxxxxxxxxxxxx/.default"}


   If GecoConfig.IsUATEnvironment Then
     Credential = New ClientSecretCredential(m_AZURE_TENANT_ID, m_UATClientID, m_UATClientSecret)
   Else
     Credential = New ClientSecretCredential(m_AZURE_TENANT_ID, m_ProdClientID, m_ProdClientSecret)
   End If

   m_Token = Credential.GetToken(New TokenRequestContext(RequestContexts), c)

   Return m_Token
 End Function

The code works in my environment. However in our UAT it works but only for 1 of the application. The UAT web application is ok but not the web application version that has the version we have deployed in production (it does not work in production too).

I am getting the following error message

Retry failed after 4 tries. Retry settings can be adjusted in ClientOptions.Retry or by configuring a custom retry policy in ClientOptions.RetryPolicy.

I have tried to add the following code but it did not help

    Dim CredentialOption As New ClientSecretCredentialOptions
      CredentialOption.Retry.MaxRetries = 10 ' Increase this value to retry more times before failing
      CredentialOption.Retry.Delay = TimeSpan.FromSeconds(2) ' This is the minimum delay between retries
      CredentialOption.Retry.MaxDelay = TimeSpan.FromSeconds(10) ' This is the maximum delay between retries
      CredentialOption.Retry.Mode = RetryMode.Exponential ' This will increase the delay between retries exponentially

      Credential = New ClientSecretCredential(m_AZURE_TENANT_ID, m_UATClientID, m_UATClientSecret, CredentialOption)

Any idea? Could it our firewall that could block the scope?

Thanks in advance, Jonathan