I just went to share a web page for Chrome and was immediately dumped into Dropbox instead of being presented with a list of apps and the Always/Once buttons. Maybe I accidentally selected Always last time, but I don't think so. Regardless, the Clear Defaults button for DropBox in application manager is grayed out. Sharing from other apps also defaults to DropBox. Any suggestions? On a related note, when is Google going to realize the stupidity of this Always/Once BS and go back to the checkbox in the dialog? What used to be one tap (select the app) now requires two (select the app and tap Once), and on the off chance I always want to do the same thing, I still have to tap twice. What were they thinking? Edit: Now I feel bad since I found a solution so quickly AFTER posting, but here it is: http://www.cultofandroid.com/45640/fix-the-share-menu-bug-in-android-4-4-kitkat/ Apparently there's a bug in KitKat. I did what the article suggests, but it clears an awful lot of stuff.