Upload Multiple Documents option isn't available in a document library in SharePoint Server 2013
Original KB number: 2761257
Assume that you access a Microsoft SharePoint Server 2013 document library through a computer that has Microsoft Office 2013 installed. When you try to upload multiple documents to the document library, the Upload Multiple Documents option isn't available in SharePoint Server 2013.
The Upload Multiple Documents option is deprecated in SharePoint Server 2013.
To work around this issue, do one of the following to upload documents to the SharePoint Server 2013 document library:
- Use the Windows Explorer view
- Use the SharePoint Server 2013 drag-and-drop functionality
For more information about how to upload, create, or delete files in a SharePoint Server 2013 library, see Upload files and folders to a library.