Attempt by security transparent method to access security critical method failed

Question

Attempt by security transparent method \'PayPal.UserAgentHeader.get_OperatingSystemFriendlyName()\' to access security critical method \'System.Management.Management

Answer 1

I was working on a brownfield application with a lot of referenced projects in the solution. One project was set to .NET 4.0 instead of 4.6.1 and I thought that might be it, but that wasn't the issue. I had to add:

 [assembly:AllowPartiallyTrustedCallers]

to the assembly.cs file in the project containing the "security critical" method, and it wasn't happy with me until I also added

using System.Security;

That did the trick.

Joey