No extensions in Extension Manager - 4.11.0 build (Nightly Also) in Windows
(I already did manual installation but it did not work.suspicious factor is that revision number was not seen in extension-manager)
Can you introduce stable revision number(like Slicer version 28257) for fixing no extensions in extension mangager in Windows build?
Have you built Slicer yourself? If yes, then make sure you checkout the source code from SVN and Slicer can find SVN executable (so that it can retrieve the revision number).