airdrop is missing from finder and from finder preferences sidebar
I have a late 2012 27inch iMac running Yosemite, I can not find air drop on the finder sidebar and it is not in finder preferences sidebar either. The systems has 3 accounts on it and airdrop is available in finder on the other 2 accounts but it is not in mine. I have tried the terminal command "defaults write com.apple.NetworkBrowser BrowseAllInterfaces 1" and relaunched finder and I have rebooted numerous times.... please help
iMac (27-inch, Late 2012), OS X Yosemite (10.10.3)