When I used Telerik. WinControls. DLL Update, I found that the new version was updated in the background, and the client could not update it again.
For example, my original Telerik UI for WinForms 2018.2.621.40, now I update the Progress Control Panel in the background and change it to Telerik UI for
WinForms 2019.1.219.40. However, the client update will report an error, which appears: Telerik. WinControls. DLL access is denied.