Auto-Logout
Did QB recently (within the past few months) make any updates that would impact a user being auto-logged out due to inactivity? Admittedly this hasn't happened to me as I spend a big chunk of my day in QB, but I've had a lot of users complain that they've been getting logged out more and more often. Apparently they used to go the entire day without getting logged out (despite our realm-level policy being set at 2 hours of inactivity before triggering a log out), and now they're reporting as little as 30 minutes of inactivity before being asked to log back in again. It's a mild annoyance that's impacted a lot of my users.
Something I never really noticed because I hardly go 20 minutes without using QB during work hours, but maybe our 2 hour logout policy at the realm level wasn't being enforced properly and now it sort of is?