AAD Connect 400 Bad Request

Jan Rigsinger 0 Reputation points
2023-03-28T13:59:20.8533333+00:00

Hey everybody,

i have a problem. A client try to login to aad connect setup assistent zu change something but he cant sign in. When he trys to sign in the error code "Unable to validate credentials. verify network connectivity and firewall or proxy settings. The remote server returned an error: 400 bad request". He also cant sign in to azure ad but local ad sign in works. We try to use the aad connect troubleshooting but its also not working. Have someone a solution for this problem ?

Best regards

Jan

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. James Hamil 21,546 Reputation points Microsoft Employee
    2023-03-28T23:53:38.1+00:00

    Hi @Jan Rigsinger , The error message "Unable to validate credentials. verify network connectivity and firewall or proxy settings. The remote server returned an error: 400 bad request" indicates that there is an issue with the credentials or network connectivity. You can try the following steps to resolve the issue:

    1. Verify that the user is using the correct credentials to sign in to Azure AD Connect setup assistant.
    2. Check the network connectivity and firewall or proxy settings to ensure that they are not blocking the connection to Azure AD.
    3. Ensure that the machine.config file is correctly configured
    4. Verify that the user has the correct permissions to perform the action in Azure AD
    5. If the issue persists, you can try to uninstall and reinstall Azure AD Connect

    Please let me know if you have any questions and I can help you further.

    If this answer helped you please mark it as "Verified" so other users can reference it.

    Thank you,

    James

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