PDF attachments won't print unless they are saved first.

I have users with Adobe DC and Adobe Pro using Windows 10 and 11 that will not allow them to print a PDF unless they save the file first.  These files are normally from email attachments.  When the file is opened, they choose 'open in default app' which opens them in Adobe, but when the user chooses 'Print', the drop down box of all available printers lists instead of sending it to the printer.  If the file is saved first, the print process works fine.

I have already changed the Enhanced security features to turn off  'Enable Protected mode at startup' and checked Adobe for any updates. 

Any help would be greatly appreciated.

Mike