Problem:

Getting error "Microsoft.ACE.OLEDB.12.0 provider is not registered on the local machine" when I run an application that is processing .xls or csv file.

Solution:

you are getting this error due to "AccessDatabaseEngine" this appliation need to install on your machine.

from below link 
https://www.microsoft.com/en-us/download/confirmation.aspx?id=13255