By default, the Front End Application will detect if the end-user has the Viewer installed on their system. If you know that none of your users have the Viewer, you can improve performance by disabling automatic detection.
Add the following to the Front End Application’s web.xml file:
The disableViewerDetection setting is not a documented feature.
See also Provide the Viewer to some of your users
Parent topic: Setting up the Front End Application