PDF Error - there was a problem starting the Viewing Application

When creating a PDF and selecting “view PDF” this message pops up. I’m unable to view the PDF unless i go into the windows folder and open the file manually.

I use Adobe Acrobat and Bluebeam Revu both full versions/licensed etc.

Is there a permission that needs to be granted, or is this a known bug/issue with LayOut? It didint happen until 2026.