.gpn file: how to open it on Windows
2 Windows apps register the .gpn extension. Install one of them to open the file with a double-click.
- Untis 2025
The comprehensive solution for creating timetables, scheduling lessons and for school communication
- Untis 2026
The comprehensive solution for creating timetables, scheduling lessons and for school communication
Related guide: Change the default app for a file type in Windows