Windows apps do not appear as an option when right clicking in Yosemite

Hello
When I right click on a file on the finder (Excel) it does not appear as an application, when I navigate to the windows app folder Excel.exe is not recognised as a valid application by OS X
Any help will be welcomed

 

When I opened my laptop this morning, right clicking the file has given me the option of using windows apps. It was not there yesterday. Problem solved. I don't know how to close this threat