How to Find the Different .net version being referenced?

Question

I am trying to find the ThreeLetterISORegionName of country "Cyprus" and "Virgin Islands". hence so I have used RegionInfo class using System.Globalization from mscorlib assembly.

RegionInfo regionInfo = new RegionInfo("CY");
Console.WriteLine(regionInfo.ThreeLetterISORegionName);

The above code works fine in my local machine. however after deploying to production I am getting System.ArgumentException with message

The region name CY should not correspond to neutral culture; a specific culture name is required

In my local machine and server I am using .net 4.5.2 version. mscorlibv assembly version is 4.0.30319

Any help is much appreciated. :)

Answer 1

Later I found the root cause of this problem.

My local machine is Windows 10 which has the updated region info.

where my server OS is windows server 2008 which doesnt have region information on cyprus or Virgin Islands