Getting frustrated -
Long time user of Telerik. I have a new Windows 10 build. clean installation of Visual Studio 2013. The only version of Telerik on this computer is 2017.1.118.45. I used the Telerik Control Panel to install Telerik into VS 2013.
New Telerik Web Project. Give it a name. Select the Responsive web app. Compile and test - works great. Add a new page. Drop a radgrid on the page.
'Could not load file or assembly 'Telerik.Web.UI, Version=2017.1.118.45, Culture=neutral, PublicKeyToken=121fae78165ba3d4' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)'\\XXXXX\LCxxxxx
Delete the newly added page. Same problem. Permissions all seem OK on the Telerik files. Same result if I run Visual Studio as an admin or regular user.