Can I only use one domain?

There are times when you need to use multiple domains.
In the past, there seemed to be an IDENTITY__MULTIPLEDOMAINS env,
but it appears to have been removed.

identity-server/.well-known/openid-configuration
Since there is only one URL_BASE input, the issuer is fixed, so only one domain can log in.

Is there a way to use Squidex across multiple domains?
For example, a company-provided OAuth2-based SSO has a policy that restricts the redirect_url to only the company domain.

How would you solve it then? You need to host Squidex under a subfolder or subdomain. Multiple domains would not really help afaik.

RedirectToAuthorizationEndpoint

I tried a trick to force the redirect_uri to change in the function, but it seems to be blocked by cookie policy.

I couldn’t find a solution.

I am not sure what you mean. Sorry.