When trying to open an Office file within the client application from a SharePoint site, nothing happens.
The file does not open and no error message is presented.
This issue is seen when an Office 2013 product such as Lync, Project, Visio is installed and Office 2010 is install on the same machine and the SharePoint Foundation Support enabled on both
NOTE: This solution doesn't apply to scenarios when the following 2013 applications are installed: SharePoint Designer, OneNote or InfoPath
To open an Office file in the client when SharePoint Designer, OneNote or InfoPath is installed, go into the registry by typing regedit from the Run line and rename the SharePoint.OpenDocuments.5 key (ex. SharePoint.OpenDocuments.5.x) under HKEY_CLASSES_ROOT.
** This key will be added back to the registry anytime you run a Repair/Update of the Office 2013 program and will be have to renamed/deleted again.