I am unable to open attachments in Windows Live Mail.  This function worked until about two weeks ago and just suddenly stopped.  I made not changes to any setup.  The answers I've seen on this topic previously are too technical for me to follow or I have different versions of the OS or software.  I'm running Windows 8, Office 15, and Windows Live Mail 12.   I even had my technical guru to make an office visit, and he was unable to resolve the issue.  I am also unable to open Word or Excel documents from downloaded files from the Internet.  Very frustrating and an efficiency killer.  

Any assistance will be appreciated.