Here is the report regarding the download availability for the Cadence Allegro Free Physical Viewer.
For those who already had the full Allegro 17.4 suite installed but just wanted to open a quick secondary viewing session, Alex pointed out a hidden shortcut: the viewer executable, allegro_free_viewer.exe, is often already tucked away in the C:\Cadence\SPB_17.4\tools\bin directory. cadence allegro free physical viewer 174 download link
Q: Can I use it to open OrCAD PCB Editor files?
A: Absolutely. OrCAD PCB Editor (.brd) files are fully compatible with Allegro FPV 17.4. Here is the report regarding the download availability
The Cadence Allegro Free Physical Viewer is a free tool that enables users to view, analyze, and verify Allegro design files. This viewer supports various file formats, including .brd, .dft, and .tgz. With the Allegro Free Physical Viewer, users can: Alternative official channels