When deploying an Angular 18 app on Azure Static Web App, developers may encounter issues with browser refreshes resulting in 404 errors. According to a recent report, creating a "staticwebapp.config.json" file in the src folder and updating the "angular.json" file to include the path to this new file can resolve the issue. This fix allows for proper handling of browser refreshes and manual URL navigation.

Source: https://dev.to/mikemasaru/fix-404-error-on-a-browser-refresh-with-an-angular-18-app-on-azure-static-web-app-332e