The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. (System.Data)

In case of the following error:

Download & Install "AccessDatabaseEngine_x64.exe" version of "Microsoft Access Database Engine 2010 Redistributable"  from following site:
http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=13255