The AADSTS65004 error indicates that a user has declined to grant consent for an application to access their resources. This typically occurs during the authentication process when the application requests permissions that the user chooses not to allow.

• Applications
• Azure Active Directory

• The user explicitly chose not to allow the requested permissions.
• The application may not have been configured correctly to handle user consent.

There are several approaches to address this issue:

1. Re-prompt for Permissions: Prompt the user again for the necessary permissions by including the prompt=consent parameter in the authorization request. This will force the consent dialog to appear again, allowing the user to reconsider their decision.
2. Inform the User: Clearly communicate to the user why certain permissions are required for the application to function properly. This may help them understand the importance of granting access.
3. Handle Declined Permissions: Implement logic in the application to handle scenarios where permissions are declined. For example, it can notify the user that certain features will be unavailable due to the lack of permissions.
4. Check Application Configuration: Verify that the application is correctly configured in Azure AD. Ensure that all permissions are properly defined in the app registration.
5. User Education: Provide users with information on how to manage their consent settings, including how to revoke or grant permissions in the future.

By addressing the user's concerns and providing clear information, it is possible improve the chances of obtaining the necessary consent for the application.

Note: While forcing consent with prompt=consent is a valid solution, it should be noted that this will always show the consent screen, even if the user has previously consented. This might not be the desired behavior for every login. It is often better to only request consent when needed, which is the default behavior.