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License key does not apply. Says I only have trial version.

I am using a community license key but I keep getting a license key message when running my build saying I am using a trial key.

License key placement:


License Manager:


NuGet packages:


Error Message:


Am I doing something wrong or is this a bug???

1 Reply

JM Jeyaseelan M Syncfusion Team March 21, 2023 06:36 AM UTC

Hi Logan,

The trial version message occurs in the following cases.


You are using the license manager to validate keys. However, it only validates unlock keys, not license keys. Therefore, we suspect that you may be using the unlock key instead of the license key in your application. Please ensure that you have registered the valid license key in your project.

License keys are version and platform-specific. So, please ensure that all the referenced Syncfusion assemblies\NuGet packages are on the same version as license key’s version.

To know the difference between unlock key and license key refer the following KB.


We have introduced a new licensing system starting with version 16.2.0.x release of Essential Studio. These modifications apply to all evaluators and only to paid customers who use NuGet packages from nuget.org



Could you please share us the below details to check this further from our end?  

  1. Please share the Visual studio version and .NET Framework of your application. 
  1. Whether the license message occurring while opening the designer page after debugging or it is occurring even if other cs/vb files opened after debugging?
  2. Please share the license key registered in your application.

We had a license pop-up issue with the .NET 7.0 framework while using the designer mode in VS 2022. We have 
resolved that, and the fix was available in v20.4.0.48.

Please update to the latest Syncfusion.licensing nuget and the dependent nuget packages to v20.4.0.48 or later.


If the registered license key does not work in the Applicationdesigner.vb file, please remove it and register the license key in the Program.VB file.

Please inform us if this solution works for you.


Jeyaseelan M

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