# Cookie issue for Jupyterhub with reverse proxy

**URL:** <https://discourse.jupyter.org/t/cookie-issue-for-jupyterhub-with-reverse-proxy/4504>\
**Category:** JupyterHub\
**Created:** [May 22, 2020, 4:48pm UTC](https://discourse.jupyter.org/t/cookie-issue-for-jupyterhub-with-reverse-proxy/4504 "2020-05-22T16:48:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sthapaACR](https://avatars.discourse-cdn.com/v4/letter/s/48db29/32.png) [@sthapaACR](https://discourse.jupyter.org/u/sthapaACR)\
**Post date:** [May 22, 2020, 4:48pm UTC](https://discourse.jupyter.org/t/cookie-issue-for-jupyterhub-with-reverse-proxy/4504/1 "2020-05-22T16:48:03Z")

</div>

I am currently trying to host jupyerhub in docker and using our custom reverse proxy build with [asp.net](http://asp.net) core on top of it. Currently we are using dummy authenticator just for testing. The login is working fine, but it cannot spawn the server and in back end I am getting following error.

16:39:19.732 - debug: [ConfigProxy] PROXY WEB /gateway/acrconnect-jupyterhub/hub/spawn to [http://jupyterhub:8080](http://jupyterhub:8080)  
[W 2020-05-22 16:39:19.735 JupyterHub base:392] Invalid or expired cookie token

It is saying cookie is invalid or expired. I am not sure why Jupyter cannot read the cookie.