We have a corporate internal portal with lot of subsite and document library for various department/BU.
When a user tries to open a excel file from a document library it opens in Excel client from my machine. But for some of the users they automatically redirected to the _layouts/XLViewer.aspx where the file tries to open in Browser. The requirement is to open the file in excel client instead of XLViewer.aspx.
How to I isolate this problem and fix this issue.