Microsoft Entra ID SSO

Question

Microsoft Entra ID SSO

David Kellett 46

AADSTS90015: Requested query string is too long. Is the error I continually get when I try to sign onto Zendesk. Zendesk support said their side is setup right and that this is a microsoft problem. Can anyone help.

Goutam Pratti 4,720 Reputation points Microsoft External Staff Moderator

2025-04-17T21:23:37.0966667+00:00

Hello @David Kellett ,

I Understand you are getting AADSTS90015: Requested query string is too long which is for your zendesk application.

CAUSE:
You are getting this error because the Input validation for http listener has the limit of 4096 bytes/Strings. If it exceeds the limit AADSTS90015 happens.

Chrome: https://chromestatus.com/feature/4946713618939904
IE & Edge: https://learn.microsoft.com/en-us/internet-explorer/kb-support/ie-edge-faqs

SOLUTION:
For temporary solution Clear the cookies of your browser but for the long-term solution ask the application vendor to shorten the request so that you will not get this error.

Hope this information helps. Let us know if you have any additional queries. Happy to assist you further.
David Kellett 46 Reputation points

2025-04-17T22:13:00.7633333+00:00

I was able to fix this problem by going into my SSO setup on Entra and deleting unnecessary claims in the setup. Once those were cleared out I was able to login to Zendesk properly with the SSO.

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Goutam Pratti 4,720 Reputation points Microsoft External Staff Moderator

2025-04-17T21:23:37.0966667+00:00

Hello @David Kellett ,

I Understand you are getting AADSTS90015: Requested query string is too long which is for your zendesk application.

CAUSE:
You are getting this error because the Input validation for http listener has the limit of 4096 bytes/Strings. If it exceeds the limit AADSTS90015 happens.

Chrome: https://chromestatus.com/feature/4946713618939904
IE & Edge: https://learn.microsoft.com/en-us/internet-explorer/kb-support/ie-edge-faqs

SOLUTION:
For temporary solution Clear the cookies of your browser but for the long-term solution ask the application vendor to shorten the request so that you will not get this error.

Hope this information helps. Let us know if you have any additional queries. Happy to assist you further.
David Kellett 46 Reputation points

2025-04-17T22:13:00.7633333+00:00

I was able to fix this problem by going into my SSO setup on Entra and deleting unnecessary claims in the setup. Once those were cleared out I was able to login to Zendesk properly with the SSO.

Answer 1

Goutam Pratti 4,720 Microsoft External Staff Moderator

Hello @David Kellett

I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.

Issue: Microsoft Entra ID SSO for Zendesk Application

Solution: Able to fix this problem by going into my SSO setup on Entra and deleting unnecessary claims in the setup. Once those were cleared out was able to login to Zendesk properly with the SSO.

If you have any other questions or are still running into more issues, please let me know. Thank you again for your time and patience throughout this issue.

Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

David Kellett 46 Reputation points

2025-04-17T21:57:28.4466667+00:00

I was able to fix this problem by going into my SSO setup on Entra and deleting unnecessary claims in the setup. Once those were cleared out I was able to login to Zendesk properly with the SSO.
Goutam Pratti 4,720 Reputation points Microsoft External Staff Moderator

2025-04-21T11:08:46.5766667+00:00

Hello @David Kellett ,

Just following up to see if you had a chance to accept the answer—this helps other members who might be dealing with the same issue.

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Microsoft Entra ID SSO

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