You browse to a SharePoint site that uses a custom feature. Functionality that depends on that feature does not work, and you find an error in the SharePoint Unified Logging Service (ULS) logs as the following:
Feature definition missing for Feature "<FeatureName>"
Note <SharePointVersion> can be 14 for Microsoft SharePoint 2010 or 15 for Microsoft SharePoint 2013
These files either have been deleted or were not moved to every SharePoint web front end server.
After you replace the files, perform an Internet Information Services (IIS) Reset.
Article ID: 2671721 - Last Review: Feb 20, 2014 - Revision: 1