Shared authentication on subdomains #44205

LarryHiett · 2025-11-13T16:08:14Z

LarryHiett
Nov 13, 2025

Hi,

Using: quarkus 26.3.

I'm facing an issue which force me to sign in on my two apps within clients of the same realm.

I'd like to confirm that i missconfigured something and I should be authenticated in both apps.
Once i'm logged in in my first app, when i access to second app:

Expected: requires auth from keycloak which should detect user is authenticated and provide the auhtentication token
Actual: redirects to keycloak authentication form

Details of my structure:

one realm "test"
two clients (OpenID Connect / Standard flow) configured on same domain:
- "app1": app1.my.sub.domain.com
- "app2": app2.my.sub.domain.com

If this works, do you have any idea on what i should investigate ?

Thank you,

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Shared authentication on subdomains #44205

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Shared authentication on subdomains #44205

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LarryHiett Nov 13, 2025

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LarryHiett
Nov 13, 2025