How to resolve “No account or login hint was passed to the AcquireTokenSilent” with a Web App and no persistent token cache

You have implemented Microsoft Authentication Library or Microsoft Identity Web and now you are seeing the following error message: No account or login hint was passed to the AcquireTokenSilent The root cause is because the Token Cache is empty when you are trying to acquire a token silently when account was attempted to be pulled from MSAL. So on Web Applications like Asp.Net or Asp.Net Core, this is generally when…

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The identity of the calling application could not be established

You are getting the following error from Microsoft Graph or downstream services that uses Microsoft Graph… The identity of the calling application could not be established This error is thrown because the “oid” and “sub” claim is missing from the access token. This is because the servicePrincipal does not exist in the tenant or the tenant is not aware of the application. Partner Scenario If this is a Partner application,…

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Use logging to troubleshoot Azure AD protected Web API Authentication or Authorization errors

The sample web API application in this blog uses .Net 6 Framework and Microsoft.Identity.Web nuget package to Azure AD protect the Web API. I use Serilog framework for logging the debug output both to the console window and to the local file. This sample assumes you already have a web API application registered in Azure AD. If you are not familiar with how to do that refer to my previous…

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Managing Microsoft Graph requests in Microsoft Graph PowerShell

Basics of using Microsoft (MS) Graph PowerShell to update objects using Hashtables and JSON. These are just some examples that could be used. By no means would I consider these the “best” way to handle each scenario, however, this should get you started in the right direction. In general, a good thing to keep in mind, a Microsoft Graph type could be resembled as a PowerShell Hashtable or Array. To…

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Making MS Graph Requests using Managed Identities

This blog post is an extension to my previous post about how to get secrets and access tokens using Managed Identities with VB.Net and C#. You can read that post here. There is a c# sample for this particular blog here. The scenario here is that you already have the code to use the managed identities and now you want to get an access token for a resource that requires…

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Using Azure Identity Client with VB.Net or C# to get a KeyVault secret

This blog post will show you how to use the Azure Identity Client library in VB.Net and C# to use a Managed Identity to access a secret in KeyVault. This is assuming that you already have a keyVault secret and the user has the proper access policy to read a keyvault secret. This post will not show you how to do those tasks, only how to implement the Azure Identity…

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Using Microsoft Graph PowerShell SDK to manage user consented permissions

The oAuth2PermissionGrant object keeps a record of user consented permissions (Delegated Permissions) in a tenant. There is one OAuth2PermissionGrant object (identified by Consent ID) for each combination of client application, resource application, and user. The sample PowerShell script in this post will perform the following tasks: Remove all MS Graph Delegated permissions (if any) for the user Perform user consent for an initial set of MS Graph permission Update the…

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Receiving error “CompactToken parsing failed” when calling Microsoft Graph

You may receive the following 401 error calling MS Graph endpoint (https://graph.microsoft.com) { “error”: { “code”: “InvalidAuthenticationToken”, “message”: “CompactToken parsing failed with error code: 80049217”, “innerError”: { “date”: “2022-08-16T19:00:22”, “request-id”: “xxx”, “client-request-id”: “yyy” } } } What’s the cause of the error? The error typically happens due to the following reasons: There is no Bearer Access Token in the Request’s Authorization Header The value of the Authorization Header is in…

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Using MS Graph to get both Interactive and non Interactive sign in events log

Microsoft Graph API can be used to get different types of Sign-In event similar to what’s available in the Azure AD portal As of this writing, this functionality is only available in the beta endpoint. By default the following MS Graph request only gets a list of interactive user sign-ins GET https://graph.microsoft.com/beta/auditLogs/signIns To pull the other types of Sign-In logw you will have to use signInEventTypes filter query as followed:…

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Update your Azure AD-integrated applications to use TLS 1.2

Recently our support team has seen quite a few cases where customer applications have been working for years and recently started failing with one of the following error messages:. These errors are often seen in applications targeting an old version of .Net Framework. AADSTS1002016: You are using TLS version 1.0, 1.1 and/or 3DES cipher which are deprecated to improve the security posture of Azure ADIDX20804: Unable to retrieve document from:…

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