Dropbox Icon missing Windows 10

Hi, I had this same (infuriating!) problem and fixed it thusly:

Right click on the systray area 

select Properties

then select Notification area > customize

At the top there is a link to "Select which icons appear on the taskbar"

Go in there and toggle whatever setting you see for your dropbox icon.

Exit out -- should be fixed.

In my case the dropbox icon was set to "on" and I toggled it off. After exiting the dialog, I had my dropbox icon back in the "show hidden icons" area. I repeated the above and toggled the dropbox icon back to "on" and now it is back in my systray where it belongs.

I hope this helps someone.

Lori

Solution: as of Sep 15 2018, right click on taskbar in windows, select "Taskbar settings," and scroll down to section "Notification Area," and select "Select which Icons Appear on the Taskbar." here you should see DROPBOX and can turn it on!