Hi,
I'm using DNN 5.04.02 and the latest Login with a master portal and child portal - both with their own URLs.  I want users registered in the child portal to be able to sign in on the master.  I have SSO turned on in the master and pointing to the child portal (I do not have auto registration checked).  I don't have SSO turned on in the child.

I create a user on the child, then attempt a login on the master, but the user is not found.
You help is appreciated.

Can you send us a screenshot (maybe via the contact us form on our site) of the SSO settings for the master portal. This might help us in finding out what the issue is... your settings do sound correct.

-Chad