Unable to find the requested .NET Framework DataProvider

If you get an error like the one below follow this steps:

1. Check if all the prerequisites are installed: prerequisites

2. You may have corrupted machine.config file from .NET framework. Check this forum thread for more info:
http://stackoverflow.com/questions/23754055/sqlite-error-the-dbproviderfactories-section-can-only-appear-once-per-config

To fix that you need to follow the instructions in the above thread:
Navigate to C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config, Note the right file is machine.config and not machine.config.default ( if file extensions are hidden this is written as “machine.config” only so it might get confusing)

Then you examine the file you should find two different tags like the one below:

Delete the second tag of this type that is empty(the one highlighted in the screenshot) and don’t forget to create a backup of the file before you do this change. Then save the change and try running Tabular again.

This issue seems to be caused by IBM i Access for Windows installed on the machine Tabular is being installed. The issue is fixed in their release version 7.1 as you can see in their change log — issue is under number SE45767