.NET CORE sdk installation issue

**Failed to load the dll from

[C:\Program Files\dotnet\host\fxr\3.1.3\hostfxr.dll], HRESULT: 0x80070057
The library hostfxr.dll was found, 
but loading it from C:\Program Files\dotnet\host\fxr\3.1.3\hostfxr.dll failed
  - Installing .NET Core prerequisites might help resolve this problem.
     https://go.microsoft.com/fwlink/?linkid=798306
Hi I am new to .net core i installed dotnet core 2.1 sdk but when i try to create a console application using command prompt i am getting error as given beloww please someone could assist me with this**