Thank you for your answer.
I’m using the latest version of PDF creator ant I try to open with Adobe reader DC.
I want to generate and send the PDF from Microsoft NAV but even when I send a test email from PDF Creator’s settings the PDF is created and sent but is not readable (ADOBE reader DC says that the file is not supported or damaged)
If i print the PDF and save the file I can read and send it without any problems.
I already tried to reinstall PDF Creator but that didn’t fix it.