For definitive answers and support for any version of QuarkXPress, your best resource is the official Quark support page: https://www.quark.com/support/activation .
In version 8, "activation" and "validation" were two distinct steps used to prevent software piracy. quarkxpress 8 activation code
: By selecting "Activate over the telephone" to see your Installation Code, which you then provide to Quark Customer Service to receive an activation code back. Quark Software, Inc. Essay: The Shift from Codes to Connectivity For definitive answers and support for any version
An alpha-numeric code required during the initial installation process. It is typically found on your installation card or invoice and is tied to a unique serial number. Quark Software, Inc
: A 47-digit number generated by your specific computer after installation. Activation Code
If you possess a legitimately activated, working installation of QuarkXPress 8 on an old computer, keep that machine completely offline. Do not update its operating system or hardware components. Changing hardware parameters (like a hard drive or motherboard) will trigger a re-activation request that cannot be fulfilled. Operating System Compatibility Issues
during the initial installation process to verify you are using a legitimate copy Installation Code