TYPO3 Core

Problem
If you set "Usergroup Access Rights" to "Show at any login" then you will see in View Module only a 404 page.
Otherwise if you set a specific usergroup the page is shown in View Module.

Analysis
In the second (working) case the View Module detects an allowed usergroups and simulates the preview as this group.
But in the problematic first case there is no group selected which could be simulated.

Solution Idea
It does not matter which group simulate. You have to be logged in. Simulating any random usergroup should solve this.

Tested Version
6.2.13