sn -k myCompany.snk(You can look up sn.exe in the online MS help for more information on this utility.) Then copy this snk file to the same folder (..\Syncfusion\Essential Suite\Shared ) that holds the sf.publicsnk file that the shared normally uses. 2) Then load the C:\Program Files\Syncfusion\Essential Suite\Shared\Src\Syncfusion.Shared.sln into VisStu. Open up the AssemblyInfo.cs file and look for the reference to sf.publicsnk in the code and replace it with your snk file ( myCompany.snk ). Also, change the Delayed signing attribute to false. Now rebuild the library. This should build a new Syncfusion.Shared.DLL in the Bin folder that uses your cahnged code and is signed with its own key so you can deploy it.