Our Technical Support Portal has changed as we have moved to a new platform. Please visit support.quark.com to access your support tickets or to log a new ticket with us. All our existing customers should look for an email from email@example.com for activation of their New Support Account. If you face any difficulty in accessing the new portal, please write to us at firstname.lastname@example.org
The error message "A valid copy of QuarkXPress is already installed on this machine." can be resolved by trying below steps:
If you have further issues please feel free to contact quark.parature.com.