When I open my installation, I get the following error.
I tried turning on the diagnostics, but no logs appear when I open the application. I can't seem to find any relevant information in the event viewer too.
I tried moving the user.config file, but on startup it doesn't recreate one. Is there a specific way I should be opening up the report designer to get crash logs?
Let me know if any more information would be helpful to solve this issue.
Todor
Telerik team
commented on 28 Sep 2026, 02:54 PM
Hi Nathan,
I suspect you haven't found the correct folder. Note that there is a dedicated folder for each designer version. Inside this folder, there should be a subfolder with your designer's version. For example, my local Standalone Report Designers' folders for our latest version 20.2.26.812 are:
You may guess which is the folder by the date of its last modification shown in Windows Explorer.
Here is a link to a muted video showing how the user.config was recreated upon the start of the designer for .NET 10 on my local machine. The behavior is identical for the older designer.
You may also try deleting/renaming the configuration file beside the designer's executable: Telerik.ReportDesigner.Net.dll.config or Telerik.ReportDesigner.exe.config.