In case you ever run into this problem....I like to save files to my desktop and email them but it stopped working
PROBLEM ---send to (mail) right click context menu for desktop icons stopped working and my brother scanner ControlCenter4 stopped letting me email from it too
Downloaded ShellExView & chose hide Microsoft items
Went to context handlers - had 4--- Avast, Dropbox, NVIDIA, Spybot but Avast was the most recent so it was the culprit
Disabled avast context handler & then restored it again, then using Control +E ( = restart explorer)
Desktop disappeared so I restarted and it works fine now I can email an item on desktop
I'm going to send Avast a nasty note. I spent 2 hours on this. YUK