--- layout: default-layout noTitleIndex: true needAutoGenerateSidebar: true title: Error message - The current product key is missing the core license, please contact the site administrator keywords: Dynamic Web TWAIN, Error Troubleshooting, missing core license breadcrumbText: Error message - The current product key is missing the core license, please contact the site administrator description: Error message - The current product key is missing the core license, please contact the site administrator date: 2021-12-03 23:26:46 +0000 last_modified: 2026-01-21 16:04:54 -08:00 --- # Error Troubleshooting ## Error message - The current product key is missing the core license, please contact the site administrator ### Symptom You get an error message that says "The current product key is missing the core license, please contact the site administrator". ### Cause You are missing a license for the core module of Dynamic Web TWAIN, most likely only an addon license has been used. ### Resolution Make sure you have the correct license set in the proper configuration. See [Using full licenses](/_articles/general-usage/license.md#using-full-licenses){:target="_blank"} for guidance. If you have doubts or questions, you can contact Dynamsoft Support.