Epicor 10.2.200.5 Web Access

I am getting this error when trying to access epicor via web:

I have added address to my trusted sites and have set IIS authentication to Windows (disabled others). I got the same message for epic mobile.

If you cant see the picture, the message is "IIS APPPOOL\EpicTestWeb is not setup for single sign-on.

Thanks for your help!
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