I've just encountered a funny glitch in O365 in which I can't drag-and-drop files into a document library through its web part displayed on a web part page. Drag-and-drop works fine on the library itself, it only fails on the web part, and it's consistent across browsers and different versions of Windows/Office. I can't find any TechNet articles or questions about this situation occurring for O365, only for SP2013, and the solution doesn't help me in this case.

Has anyone else seen this behavior?

  • Works fine for me. I tested on a SharePoint online site on blank web part page. Do you see any javascript errors? Try on a completely blank web part page without any other web parts. Feb 2, 2016 at 20:38
  • There's a SyntaxError on page load in platform_embed.js, and nothing appears to be amiss when I actually try the drag-and-drop.
    – thanby
    Feb 2, 2016 at 20:46
  • I did just realize the library in question is actually on a sub-site. I haven't yet exported and added it to its own page on the parent site, but I did create that page and add the local "Documents" library to it and the drag-and-drop works fine, so perhaps it's got something to do with the fact its in a sub-site?
    – thanby
    Feb 2, 2016 at 20:54
  • I'm curious... how did you add a library web part from subsite to a page on parent site? Feb 2, 2016 at 21:12
  • It wasn't actually done by me so I can only guess, but I think the person exported the web part from the other site and manually added it to this one.
    – thanby
    Feb 2, 2016 at 21:40

1 Answer 1


I just came across this issue. This appears to be a limitation whereby SP.Utilities.CommandBlock does not get loaded to a published page in view mode. It will work for site collection admins, but not for owners/members/visitors. For non-site coll admins, the workaround is to check out the page, and then perform the drag-and-drop upload.

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