Does auth0 create SSO session in case of custom login page, so then it’s possible to use checkSession and get token in other clients?
This depends on the exact meaning of a custom login page, in particular, you can use a fully custom user interface in the classic experience of universal login (https://auth0.com/docs/libraries/when-to-use-lock) and when authenticating through universal login there’s a session established that can be leveraged for SSO.
The above would be the recommended way to meet your customization requirements and also allow for SSO. If by custom login page you meant a user interface embedded in the client application itself then the situation has other considerations.
Thanks for the reply. I use my own custom pages and custom domain, not the universal login. I was able to find the issue in my apps configuration. Now
checkSession works fine with SSO session.