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Telerik.Web.Ui.pdb not loaded error when debugging in Visual Studio


Product UI for ASP.NET AJAX


I get the 'Telerik.Web.Ui.pdb not loaded' error when trying to debug in Visual Studio 2019.

The Exception thrown is System.NullReferenceException: 'Object reference not set to an instance of an object.'


  1. Go to Tools -> Options
  2. Make sure that the Enable Just My Code option is enabled and the Enable .NET Framework source deactivated:
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