March 2026: Aurora-Viewer, Free Primavera P6 XER File Viewer UPDATE

The free Windows-based viewer for Primavera P6 XER files, Aurora-Viewer, has been improved again. We appreciate all your helpful feedback!

Aurora-Viewer allows users to open and view Primavera P6 schedules in the “.XER” file format, without needing a full Primavera license; for FREE.

The latest version (updated March 2026) of Aurora-Viewer:

• Displays activities on the critical path in red, in both the PERT and Gantt charts
• The colors of links for the constraint types have been updated to:
  • Finish-to-Start (FS) – Black
  • Start-to-Start (SS) – Blue
  • Finish-to-Finish (FF) – Green
  • Start-to-Finish (SF) – Red
• A ‘Total Float’ column has been added to both the Tabular Editor and the Tabular Gantt

The installation includes a ‘videos’ subfolder with demonstration videos. The Single-Element-Display video provides helpful guidance for navigating and understanding your schedule.

You can access Aurora-Viewer here.

We are continually improving Aurora-Viewer and welcome your suggestions for the next iteration!