Mui X Missing License Key Remove !!top!! May 2026

Then in .env :

⚠️ if you actually use premium features. 2. Using MUI X Pro or Premium (with a valid license) ✅ Add your license key correctly: import LicenseInfo from '@mui/x-data-grid-pro'; LicenseInfo.setLicenseKey('your-license-key-here');

import LicenseInfo from '@mui/x-data-grid-premium'; // or pro // Disable license warning (only if you're 100% sure you're using free features only) LicenseInfo.setLicenseKey('');

If you're seeing a error in MUI X (Data Grid, Date Pickers, Charts, Tree View, etc.), it means you’re using a premium MUI X component without a proper commercial license.

import LicenseInfo from '@mui/x-data-grid-premium'; LicenseInfo.setLicenseKey(process.env.REACT_APP_MUI_LICENSE_KEY || '');