Entity Framework ADO.NET Sql.Data.Client provider not found

Question

I have a similar problem as the one presented in the question No Entity Framework provider found for the ADO.NET provider with invariant name 'System.Data.SqlClient'

Answer 1

I got this error but for me it was something entirely different.

I had to edit:

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config

And:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config

Searching for DbProviderFactories both configs looked like this:

When I removed the trailing everything started working again.

I was able to solve it by looking at only Unable to find the requested .Net Framework Data Provider and finding this answer:

https://stackoverflow.com/a/9929534/3850405