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When I try to look at any *.xaml page, I see instead an err msg, “System.UnauthorizedAccessException
Error 5: Access is denied : ‘C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETCore\v4.5\Microsoft.CSharp.dll’“
Is it simply a matter of adding ‘C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework.NETCore\v4.5\Microsoft.CSharp.dll‘ to my path, or…?
It’s a permissions issue: the XAML designer is unable to access the reference assemblies. One of my colleagues posted a straightforward solution in an answer to the following MSDN Forums inquiry: