Exception: type initializer for 'system.data.sqlclient.sqlconnection'?

Question

I couldn\'t figure out what is the problem for this exception.

The type initializer for \'System.Data.SqlClient.SqlConnection\' threw an exception

Answer 1

Check if you have the following Windows hotfix installed - KB2840628 - for the .NET FW 4.0 (use Windows Control Panel->Programs+Features and click 'view installed updates') and if so try uninstalling it...

https://connect.microsoft.com/VisualStudio/feedback/details/793500/sqlclr-typeinitializationexception-in-sqlconnection-since-kb2840628

It resolved the problem for me.