| Mistake | Consequence | Solution | |---------|-------------|----------| | | "License key is invalid" | Always match NuGet package version with license key version. | | Registering too late | Runtime exception | Register license before InitializeComponent() or UseSyncfusion() . | | Using trial key in production | Legal & popup issues | Regenerate key from License Manager after purchase. | | Spaces in the key string | Silent failure | Trim whitespace: key.Trim() | | Registering multiple times | No error, but redundant | Register once at app startup. | 7. Troubleshooting: "License key not found" Errors Error: "No license key found for this assembly" Cause: The license key was not registered before the first Syncfusion control loaded.
var licenseKey = builder.Configuration["SyncfusionLicenseKey"]; SyncfusionLicenseProvider.RegisterLicense(licenseKey); For (CI/CD best practice):
Then load it:
However, many developers struggle with the process. Where do you find the key? How do you generate it correctly? What is the best practice to avoid runtime errors?
What method do you use to generate and manage Syncfusion license keys? Let us know in the comments below!
Console.WriteLine("✅ License valid");