When you try to open a file from an on-premises installation of Microsoft SharePoint Server or from SharePoint Online in classic view, the browser defaults to either downloading a local copy or trying to open the file in the browser. Applies to: SharePoint Server 2013, Microsoft SharePoint Server 2013 Service Pack 1, SharePoint Online.Can't open SharePoint documents in a local client (rich client) from Chrome when NPAPI plug-in is missing