I'm developing an application using Visual Studio 2015 and Framework version 4.6 with Entity Framewrok 6 and Oracle Database. Every thing was working fine until today after installing the visual Studio 2015 update 1. I couldn't build the application and I'm getting the following Error Message:
ADO.NET provider with invariant name 'Oracle.ManagedDataAccess.Client' is either not registered in the machine or application config file, or could not be loaded.
I tried restoring packages, removing the Oracle packages (DataAccess and EntitFrameWork) and adding them again with no success. I also found this slightly similar issue in Oracle community but the guy had to uninstall Visual Studio to solve the issue.
I found this post with a solution to my problem: http://www.expertdebugger.com/2015/12/08/solving-the-oracle-developer-tools-for-visual-studio-package-did-not-load-correctly-error-createinstance-failed-for-package-oracle-developer-tools-for-visual-studiocould-not-load-file-or-assembly/