The Web Client 12 Configuration option from the start menu is just showing repository folders now
The shortcut now leads to this page instead of the old page
http://localhost/laserfiche/shortcut/shortcut.aspx?page=configuration
And this page just forwards you to /laserfiche/Browse.aspx which looks like this when opening it. Same as choosing just Repository Web Client 12 from the start menu.
From here I can go to Administration but not Configuration.
So instead I tried using the old URL from previous versions and it worked when manually typing this into the browser
laserfiche/configuration/configuration.aspx