Please anybody can tellme why when I point on any cell of any excel file, and try to do one click with my right button on my mouse, dont showme the options ?
because my right button dont do nothing, and if I want to format any specific cell, I need to go to "Format" and then the options on the menu bar...

In the past this option its working very well, but today its gone !!

can any body tellme what its happening ? ( my mouse its working good in other programs or on windows )

thanks