# SSO and multiple discourse apps

**URL:** <https://meta.discourse.org/t/sso-and-multiple-discourse-apps/140083>\
**Category:** SSO\
**Created:** [January 29, 2020, 4:48pm UTC](https://meta.discourse.org/t/sso-and-multiple-discourse-apps/140083 "2020-01-29T16:48:38Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)\
**Post date:** [January 29, 2020, 5:04pm UTC](https://meta.discourse.org/t/sso-and-multiple-discourse-apps/140083/2 "2020-01-29T17:04:54Z")

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> [@Eyal\_Yablonka](#):
>
> Ideally, signing up to either one of them should exempt the user from having to sign up to the second one as well, and the authentication key should be shared between these instances.

You need to choose either one of those or a third instance to be the server for all of them.

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_[View the full topic](https://meta.discourse.org/t/sso-and-multiple-discourse-apps/140083)._