I have an OOTB site and document library. I added the document set content type to the library without any errors. I created a new document set, added the attributes and clicked OK. It went directly to a 404 page.

I went back to the document library home page, refreshed and the new document set record was displayed. I was able to view and edit properties.


1) If I navigate to:


I get the 404 error


2) If I navigate to:


I get a System.NullReferenceException error which makes sense since I removed the id attribute



How do I debug a 404 error for a Document Set's Welcome Page?

  • can not deactivate - get Cannot deactivate the feature because the Document Set content type is in use. – Val Nov 5 at 19:11

I was able to resolve this issue by deactivating and activating the site collection feature Document Sets.

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