Server is a new server with a fresh install of Windows Server 2008 R2.
QlikView install is a fresh install of QlikView 11.2 SR3 - never had QV on the server before.
In the User Preferences on QlikView Destop, on the License tab, I can normally see the server license. For no apparent reason, QlikView document reloads occasionally hang up following completion. After one of these hangups, the server license fields on User Preferences in any app show blanks, even though users can still connect to QlikView apps via the Web. If I try to change the license through User Preferences, it comes up with the message that the license could not be applied. If I then go to the QlikView Management Console and update the license from server, it updates fine and the next time I look at User Preferences the license information is showing again. Note that just updating the license through QMC is not enough; I have to try and change it first through User Preferences, then Update from QMC in order for the license to be reapplied.
I am fairly sure these odd hang ups and the licensing issues are related. Once a QV document has hung, every attempt to open any QVW on the server is met with the message "Problems sending command" and no reloads of any QV document will proceed.