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431 typically means you have exceeded the allowed header/token size. I believe the max is 64KB and that cant be adjusted. Can you remove those extra claims?
Azure AD Authentication 431 error
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DM - Vikas Gupta
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Reputation points
When adding group claims in my application registered on Azure AD and the using the Azure AD authentication by clicking the link, we should able to see the AZure AD login page, but it gives 431 error on browser.
Need help on this.
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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DM - Vikas Gupta 0 Reputation points
2023-09-04T11:08:03.2733333+00:00 When I checked my cookies and found that many cookies are been saved for the authentication:
As I m using the default behavior, I have not added any unwanted claims
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JamesTran-MSFT 36,906 Reputation points Microsoft Employee Moderator2023-09-07T21:30:52.79+00:00 I wanted to check in and see if you had any other questions or if you were able to resolve this issue?
If you have any other questions, please let me know. Thank you for your time and patience throughout this issue.
If the information helped address your question, please Accept the answer. This will help us and also improve searchability for others in the community who might be researching similar information.
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Andy David - MVP 157.4K Reputation points MVP Volunteer Moderator2023-09-01T11:11:19.9966667+00:00 -
DM - Vikas Gupta 0 Reputation points
2023-09-04T11:10:13.7166667+00:00 I am not aware about which claims do I need to remove. I am simply using the Azure AD Authentication by registering my App on Azure and configuring my application.
Can you provide me more details?
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