Preventing searches in subfolders

Question

How can I prevent subfolders from document libraries appearing in search results in SharePoint online?

I can currently prevent searches and indexing on documents in a document library but I need it to prevent in subfolders rather than the entire document library.

Answer 1

This seems to be what you're looking for - http://blog.cognit.se/sharepoint-search-how-to-filter-out-folders/

I would probably modify the appropriate search verticals and result sources to include the ContentTypeID exclusion for the Folder content type.