Why Does the IsLicenseValid Flag Return False

Updated on Apr 24, 2026

Environment

Version	Product	Author
2026.1.210	Telerik Document Processing	Desislava Yordanova

Description

When using the TelerikLicensing.License() method, the IsLicenseValid flag may consistently return false even though the license is handled correctly.

Solution

The TelerikLicensing.License method has several overloads accepting different parameters. If you call the License() method without passing any arguments, it checks the entry assembly of your project (e.g. console application) which explains the false result. However, you can pass a Telerik assembly explicitly to the License method to check the license validity for this particular assembly. For example:

csharp

using Telerik.Windows.Documents.Fixed;

Assembly fixedAssembly = typeof(RadFixedDocument).Assembly;
var license = Telerik.Licensing.TelerikLicensing.License(fixedAssembly);
bool isValid = license.IsLicenseValid;

Thus, if the license is properly setup, the IsLicenseValid flag is expected to return true.

See Also

• Runtime Licensing Diagnostics