Yes, but with risk. If you purchased a lifetime license for the old PDF-XChange Viewer Pro , it still works on older Windows systems. However, Tracker Software no longer provides security updates or Windows 11 compatibility fixes for the legacy Viewer. Most users should transition to the modern Editor.
was a popular freemium PDF reader. While it remains functional for many, it has officially been discontinued and replaced by PDF-XChange Editor . pdf xchange viewer license