Open My Computer → double click "C:" drive → double click "Windows" → double click "Microsoft.NET" → double click "Framework" → Inside this folder, there will be folder(s) like "v1.0.3705" and/or "v2.0.50727" and/or "v3.5" and/or "v4.0.30319". Your latest .NET version would be in the highest v number folder, so if v4.0.30319 is available that would hold your latest .NET framework. However, the v4.0.30319 does not mean that you have the .NET framework version 4.0. The v4.0.30319 is your Visual C# compiler version, therefore, in order to find the .NET framework version do the following. Go to a command prompt and follow this path: C:\Windows\Microsoft.NET\Framework\v4.0.30319 (or whatever the highest v number folder) C:\Windows\Microsoft.NET\Framework\v4.0.30319 > csc.exe Output: Microsoft (R) Visual C# Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 Copyright (C) Microsoft Corporati