Hi!
We tried setting up 11.1 and 11.2 using CloudBuilder for AWS, and for some reason, when navigating to Portal > Organization > Settings, we are being logged out and asked to login again. This is also happening when trying to login to server manager page. Just to be clear, we are unable to access Settings and Server Manager because of this issue.

We already tried running the CloudBuilder on both Linux and Windows, and both have an issue.
We saw similar post before (link below), to enable Anonymous Auth on IIS for whole Arcgis item, but IIS sites from the Default are already using Anonymous auth:
Solved: Portal logging out when trying to edit settings - Esri Community

Thank you!