AADSTS1002016: You are using TLS version 1.0, 1.1 and/or 3DES cipher which are deprecated to improve the security posture of Azure AD.

Question

We are using MSAL.net in the VB.net desktop application to authenticate using Azure AD.

but currently facing issue "AADSTS1002016: You are using TLS version 1.0, 1.1 and/or 3DES cipher which are deprecated to improve the security posture of Azure AD."

Steps: 1 Register the application over Azure AD and redirect url

Step 2: Call AcquireTokenInteractive() from the VB.net desktop application:

        Try
            Dim ClientId = "800648b7-d74c-45a9-9895-9da2dd67109b"
            Dim Tenant = "3c150d40-f8a6-4418-b062-26ad5b6608dd"
            
Dim publicClientApp As IPublicClientApplication = PublicClientApplicationBuilder.Create(ClientId).WithRedirectUri("https://login.microsoftonline.com/common/oauth2/nativeclient").WithAuthority(AzureCloudInstance.AzurePublic, Tenant).Build()

            Dim scopes As String() = New String() {"user.read"}

Dim authResult = Await publicClientApp.AcquireTokenInteractive(scopes).ExecuteAsync()
            Dim s = authResult.AccessToken



        Catch ex As Exception
        End Try

Step 3: Popup screens open to adding username and password but after that it throws the exception:

Do we are missing some steps over it? We just need to get the Token after login in to the code.

Answer 1

Have you enabled TLS 1.2 on the client or within that script that is connecting to Azure ?

https://learn.microsoft.com/en-us/troubleshoot/azure/active-directory/enable-support-tls-environment?tabs=azure-monitor