DevExtreme is a powerful suite of UI components for Angular, React, Vue, and jQuery. However, moving from a trial to a production environment requires one critical step: applying a valid DevExtreme License Key .

Then, in Program.cs or Startup.cs , ensure you call:

DevExpress.AspNetCore.DevExpressStartup.UseLicenseKey(Configuration["DevExpress:LicenseKey"]); If you are using the commercial version of the JS library, set the global configuration before initializing any components:

window.DevExpress.config( licenseKey: "YOUR-LICENSE-KEY-HERE" ); Place the key in an environment variable (never hard-code it). Then pass it via the DefinePlugin :

"DevExpress": "LicenseKey": "YOUR-LICENSE-KEY-HERE"