Getting azure secret key return either null, Not Found, Object not set

Question

Hi,

I was able to get the secret key in my mobile app last month. However, it has stopped working. I tried all different solutions that I found online, and each returns different result.

Here is the code:

var keyClient = new KeyVaultClient(async (authority, resource, scope) =>
{
var adCredential = new Microsoft.IdentityModel.Clients.ActiveDirectory.ClientCredential(CLIENTID, CLIENTSECRET);
var authenticationContext = new AuthenticationContext(authority, null);
return (await authenticationContext.AcquireTokenAsync(resource, adCredential)).AccessToken;

                });
               var secret = keyClient.GetSecretAsync(BaseURL, key, SecretKeyVerstion);

            return secret.Result.Value.ToString();

This is one of the methods that I tried. I also tried the following code that was working before:

public void GetAzureUrl()
{
try
{

            if (string.IsNullOrEmpty(LocalDBStorage.AzureUrls))
            {


                  keyVClient = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(GetToken));
                var secret = await keyVClient.GetSecretAsync(SECRETURI);
              LocalDBStorage.AzureUrls = GetSecretAsync(SECRETURI);

               keyVClient.Dispose();
            }
        }
        catch (Exception ex)
        { throw ex; }

    }

public string GetSecretAsync(string key)
{
if (Cache.TryGetValue(key, out var value))
return value;
else
{

               var kv = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(GetAccessTokenAsync));

             var secret = (kv.GetSecretAsync(App.SECRETBase)).GetAwaiter().GetResult().Value;



            return secret.Result.Value.ToString();
        }
    }

private async Task<string> GetAccessTokenAsync(string authority, string resource, string scope)
{

        var clientId = CLIENTID;
        var clientSecret = CLIENTSECRET;
        ClientCredential clientCredential = new ClientCredential(clientId, clientSecret);

        var context = new AuthenticationContext(authority, TokenCache.DefaultShared);
        var result = await context.AcquireTokenAsync(resource, clientCredential);

        return result.AccessToken;


    }

I get the same results.

The secret key date expiration is not set to expire in Azure portal.

Could you please advice?

Kind regards,

Kamal