Unable to load DLL 'SqlServerSpatial.dll'

Question

I have a .NET MVC web application referencing System.Data.Spatial so I can use the DbGeography datatype on a property for some geolocation stuff. I

Answer 1

SQL 2012 installs this dll too, SQL 2014 don't! You have to install the Microsoft System CLR Types for SQL Server 2008 R2 on the machine.

1. http://www.microsoft.com/en-us/download/details.aspx?id=26728
2. Click Download

3. Check off one of these depending on your processor architecture:

   • 1033\x64\SQLSysClrTypes.msi
   • 1033\x86\SQLSysClrTypes.msi
   • 1033\IA64\SQLSysClrTypes.msi

4. Click Next

Edit

as Ian Grainger's comment, you have to install the correct version based on your IIS. apparently IIS Express runs in 32bit mode by default.