Multi-Site SSO (Express)

Can anyone direct me to where/how I can implement multi-site SSO? Namely for subdomains of the same root domain. (i.e,

I tried doing it exclusively with a top-level cookie in the hopes that the SDK would pick it up, but that didn’t seem to work.

Environment: Node.js v16 (and v18) w/ Express.js running on NGINX.

Any guidance or advice is helpful.

Hi thecutefoxxy,

Thanks for reaching out to Auth0 Community!

Please check this previous post on community with similar issue hope this helps! How to login once across multiple subdomains on a custom domain?