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Error occurs when you try to sign in to an app that's set up for Azure AD B2C

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This article describes an error that occurs when you try to sign in to an app that's set up for Azure AD B2C.

Original product version:   Microsoft Entra ID
Original KB number:   3092587

Symptoms

When you try to sign in to an app that is set up for Microsoft Azure Active Directory (AD) business to consumer (B2C), you receive the following error message:

Sorry, but we're having trouble signing you in
We track these errors automatically, but if the problem persists feel free to contact us. In the meantime, please try again.
Your administrator hasn't provided any contact details Correlation ID:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Timestamp:yyyy-mm-dd hh:mm:ssZ
AADB2C: An exception has occurred

Cause

The client ID may be missing or incorrect in the Web.config file for the app.

Resolution

To fix this issue, follow these steps:

  1. Open the Web.config file for the app.

  2. In the Web.config file, find the app key ida:ClientId.

  3. Replace the value of the app key with the client ID that is provided for your app in the Azure AD B2C admin portal.

    The changed part of the file resembles the following:

    <appSettings>
<add key="ida:ClientId" value="**xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx**">
</appSettings>

Contact us for help

If you have questions or need help, create a support request, or ask Azure community support. You can also submit product feedback to Azure feedback community.