Re: How to turn on Preview Features for Portals?
Hi @Gatwick ,
You can get your authentication settings by logging in to the following URL :
https://make.preview.powerapps.com/
Note: Make sure you have logged in to the portal with your credentials. Then in a new tab if you open the above URL pick your environment then pick your portal app then edit > settings > you can see the authentication settings like below

Hope it helps.
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