# Kibana shows 500-Internal Server Error after upgrade from 9.3.1 to 9.4.1 when security is turend off

**URL:** <https://discuss.elastic.co/t/kibana-shows-500-internal-server-error-after-upgrade-from-9-3-1-to-9-4-1-when-security-is-turend-off/386504>\
**Category:** Kibana\
**Tags:** elastic-stack-security\
**Created:** [May 26, 2026, 11:55am UTC](https://discuss.elastic.co/t/kibana-shows-500-internal-server-error-after-upgrade-from-9-3-1-to-9-4-1-when-security-is-turend-off/386504 "2026-05-26T11:55:57Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [May 26, 2026, 2:53pm UTC](https://discuss.elastic.co/t/kibana-shows-500-internal-server-error-after-upgrade-from-9-3-1-to-9-4-1-when-security-is-turend-off/386504/2 "2026-05-26T14:53:46Z")

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Let's continue the discussion here

> [@Kibana 9.4.1 xpack disabled not working anymore](https://discuss.elastic.co/t/kibana-9-4-1-xpack-disabled-not-working-anymore/386347):
>
> I can't access Kibana with xpack security disabled since upgrading my test setup to 9.4.1 I'm proxying Kibana with nginx

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_[View the full topic](https://discuss.elastic.co/t/kibana-shows-500-internal-server-error-after-upgrade-from-9-3-1-to-9-4-1-when-security-is-turend-off/386504)._