IIS Manager could not load type for module provider 'SharedConfig' that is declared in administration.config

https://support.microsoft.com/en-ie/help/3151973/iis-shared-configuration-feature-requires-all-servers-to-run-the-same

IIS Shared configuration feature requires all servers to run the same version of IIS

You should not use the Shared Configuration feature in Microsoft Internet Information Services (IIS) for a server farm that contains different releases of IIS. If you mix and match IIS versions in the same server farm, errors are logged in the Application log. 

For example, the following combinations are not supported:

• IIS 7 and IIS 7.5
• IIS 7 and IIS 8
• IIS 7 and IIS 8.5
• IIS 7.5 and IIS 8
• IIS 7.5 and IIS 8.5
• IIS 8 and IIS 8.5

More Information

This behavior is by design. The Administration.Config feature includes the modules for use in IIS Manager, and these entries specify the version numbers.

When you use unsupported combinations of IIS, IIS Manager cannot load the feature components, and the UI is missing the icons for those modules.

For example: Microsoft.Web.Management.Iis.dll from IIS8 specifies Version=8.0.0.0, and IIS8.5 specifies Version=8.5.0.0.