Getting Connection Reset Issue while Fetching Azure Access Token

Question

hope everyone is well.

I am using azure library to fetch access token using the below code snippet, but getting an error

Execution of class com.microsoft.aad.msal4j.AcquireTokenByAuthorizationGrantSupplier failed.
com.microsoft.aad.msal4j.MsalClientException: java.net.SocketException: Connection reset

When I enclose the code in try catch, it gets catched as an ExecutionException.
Below is the code snippet.

ConfidentialClientApplication app = ConfidentialClientApplication.builder("XXX", ClientCredentialFactory.createFromCertificate(XXX, "")).authority("https://login.microsoftonline.com/XXX").build();


ClientCredentialParameters clientCredentialParam = ClientCredentialParameters.builder(Collections.singleton(String.format(https://graph.microsoft.com/.default))).build();


CompletableFuture future = app.acquireToken(clientCredentialParam);

//call to future.get() function

I appreciate if anyone could help me in this issue as I am unable to find any solution for this for the past 2 weeks, tried so many ways but no success.

Thanks

Answer 1

Hello @Rahul Kapoor , thank you for reaching out. I just see the ConfidentialClientApplication class being used here. To understand this better I would suggest debugging your code to check if there is any specific message being passed while your ExecutionException error gets caught in the catch block.

Also, here in the code try updating line 7 to CompletableFuture<IAuthenticationResult> future = app.acquireToken(clientCredentialParam);
Also, I would suggest taking a look at the following sample: https://github.com/Azure-Samples/ms-identity-java-daemon/tree/master/msal-client-credential-certificate/src/main/java

This also uses client_credentials flow with certificates.

Hope this helps.

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