# Kerberos Authentication checksum failed error

**URL:** <https://discuss.elastic.co/t/kerberos-authentication-checksum-failed-error/370771>\
**Category:** Kibana\
**Created:** [November 19, 2024, 2:33pm UTC](https://discuss.elastic.co/t/kerberos-authentication-checksum-failed-error/370771 "2024-11-19T14:33:38Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Maretti](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/maretti/32/118976_2.png) [@Maretti](https://discuss.elastic.co/u/Maretti)\
**Post date:** [November 19, 2024, 2:33pm UTC](https://discuss.elastic.co/t/kerberos-authentication-checksum-failed-error/370771/1 "2024-11-19T14:33:38Z")

</div>

Hi all,

I'm trying to setup Kerberos authentication on Kibana, when logging in I get the following error

```auto
[2024-11-19T14:13:25.734+00:00][INFO][plugins.security.authentication] Performing login attempt with "kerb1" provider.
[2024-11-19T14:13:25.866+00:00][ERROR][plugins.security.kerberos.kerb1] Failed to exchange SPNEGO token for an access token: {"error":{"root_cause":[{"type":"security_exception","reason":"Failure unspecified at GSS-API level (Mechanism level: Checksum failed)","header":{"WWW-Authenticate":["Basic realm=\"security\", charset=\"UTF-8\"","Negotiate","Bearer realm=\"security\"","ApiKey"]}}],"type":"security_exception","reason":"Failure unspecified at GSS-API level (Mechanism level: Checksum failed)","caused_by":{"type":"g_s_s_exception","reason":"Failure unspecified at GSS-API level (Mechanism level: Checksum failed)","caused_by":{"type":"krb_crypto_exception","reason":"Checksum failed","caused_by":{"type":"general_security_exception","reason":"Checksum failed"}}},"header":{"WWW-Authenticate":["Basic realm=\"security\", charset=\"UTF-8\"","Negotiate","Bearer realm=\"security\"","ApiKey"]}},"status":401}

```

Any idea's what could cause this?