Today in a test SharePoint environment I found that I don't have one of SharePoint features which I have in the productive environment. I reinstalled the solution with this feature several times, but it hadn't appeared.

I was sure that the feature is installed, I could see its folder in "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\FEATURES".

I found one excellent solution to fix the problem.

To check the missed features execute SharePoint 2010 Management Shell from one of the SharePoint servers and enter command:

Install-SPFeature –ScanForFeatures

This will show you any features that are available in the SharePoint Root but have not been installed.

You can install all the missing features using the command:

Install-SPFeature -AllExistingFeatures

After these commands all the features appeared in Features list.