Hello- In the Web Client Configuration page under Connection, there is a radio button to select one default repository so when there is a user who does not have access to that default repository, they would get the access denied message when they initially launch the page. 

Is there a way,  after login is being initiated, to identify the default repository based on who is logging in?

Instead of being bound to one default repository for all, Laserfiche would, for example, go down the list of repositories listed in Connection in the background and when it finds the first repository on the list accessible by the user logging in,  the page would be loaded with that repository as the default.