We changed the enabling and activation procedure since version 7.77. Therefore you may not use your original "Key File" or "Serial Number" to enable the latest version of PDF Driver product.

First, you need to retrieve a new valid serial number:
1> Sign in to our web site. Create a free account if you didn't have one yet.
2> Click "Register My License" in page "My product List", and then enter your original serial number for registration.
3> A new valid serial number will be shown in "My Product List". You may use it for enabling and online activation.

Secondly, you need to download the latest version of PDF Driver:
http://www.pdfwizard.com/docucom/products/Driver/PDFDAWW783STR1.exe
Note1: You need to uninstall the current version and reboot your computer before installing the latest one.
Note2: If your previous version is less than 7.65, you need to download and execute "PDF Driver Remove Tool" after rebooting.
http://www.pdfwizard.com/eng/doc/RemovePDFDriver.exe

Thirdly, follow the onscreen instructions to finish the activation:
1> After installation, you will be given the guiding information to enter the serial number for enabling.
2> Optionally enter your name and e-mail address for activation.