If you are installing the PDF2XL Enterprise edition, you may come across the Local Port Error " The requested resource is in use".
Clicking the " OK" button will result in the installation rolling back.
This issue occurs if you've previously had a copy of PDF2XL Enterprise (full or trial) installed in your machine and it is related to the CogniView Printer.
The solution is simple:
Go into your Control Panel > Devices and Printers
Locate the Cogniview Printer
Right-click and remove it
You should be able to complete your install without any trouble once this is done.
If you continue to experience issues, please visit Microsoft Support and run the utility under the "Resolution" section.