SharePoint 2013 / SharePoint 2016 / IE11 files do not open correctly in Office Client Apps, IE Doc mode 10 required


Overview:

From the SharePoint 2013/2016 document library UI, Office documents open in the web application instead of the rich client application (when it should not) or there are other issues opening documents from the SharePoint UI to the Office rich client application.  An indicator of this issue would be when an out of the box un-customized document library works fine, but a customized document library does not work.

Issue:

The SharePoint JavaScript code requires IE document mode 10 for the pages to work correctly in IE 11.  You can see what doc mode the browser is in by opening the F12 Developer tools in IE and looking at the value in the upper right hand corner, see picture below:

docmode

Workaround:

If IE is being put into document mode 11 or Edge you will need to change your custom code (master pages, etc) to not modify the IE document mode or to specify document mode 10.

For example:

<meta http-equiv=”X-UA-Compatible” content=”IE=10″ />


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