Dear Paul,
Thanks for posting in Microsoft Community.
According to your description, I understand you have an issue that nothing happens when you click button on a form to export a PDF report in a database, however, when you open the same database on your laptop, the issue doesn't happen.
We understand the issue has affected your work. Sorry for the inconvenience.
To do troubleshooting for the issue, we'd like to confirm following information.
1.Does the issue only appear in a specific database? If you try the code in a different database, does it work?
2.As you mentioned using the same database works on your laptop but doesn't work on your PC, you may try to compare the Access application on your laptop and PC. Are there any differences between the 2 Access applications?
For example, do they have same Version and Channel? You can check it from File>Account, check the information next to 'About Access'.
And are they all 64-bit Access or 32-bit Access?
Thanks for your patience and understanding!
Sincerely,
Tina | Microsoft Community Moderator