While exporting a project as PDF in QuarkXPress 2019 you may get an error - Unable to Create the pdf "C:\Users\Username\Desktop\test.pdf" file.
Applies to: QuarkXPress 2019
Solution: Issue may be due to Font Management utility like Suitcase fusion etc installed on the computer. Following solutions can tried:
1. Restart the Font Management utility or disable it and then try exporting the PDF. or,
2. If no Font Management utility is installed on your computer, simply restart your computer and then try again.
3. Try exporting the PDF to another location/folder on your system.