After Lync 2013 was installed, some users are no longer able to open the Outlook 2010 items that are listed in the Windows Search results. They may notice that the Outlook items that are listed in the Windows Search results are displayed with the new Outlook 2013 icon. Since we have Outlook 2010 on our machines the icons get changed to the Outlook 2013 as shown in the image. As indicated by Microsoft, it is a known issue and the only appropriate solution as of now is to repair the Office 2010 installation. http://support.microsoft.com/kb/2823902 To repair office you may need to run the following : setup.exe /repair ProPlus It will take some time for re pair and may need to a r eboot. It is recommend you close all Office programs before running the repair Hope this helps.