Hello community !

The setup:

-Filemaker 16 server on macOS Sierra. Solution is distributed LAN.
-FileMaker Pro 16 Advanced clients using Mac OS or Windows.

The problem:
On the windows 10 machine only, the user cannot insert pdf (option Greyd out).
The field is set pdf and interactive.

Action that solved the problem temporarily
After some research, I found out that adobe reader could be an issue on this problem. I uninstalled adobe reader and reinstalled the new version of adobe reader cc. The problem was fixed. Next day, the problem reappeared.

Extra information
-Clients running Mac OS don't experience same problem
-The windows 10 client, who cannot insert pdf, can view the pdf container field with the adobe reader plugin running in the container field, getting adobe reader's toolbar and options.

Best regards