Mac AppStore badge does not reset after installing update

Question

I am experiencing a strange problem: after I installed a bunch of updates, the Mac AppStore badge was not reset. When I go to "Updates", I get the message "no updates available". I tried to

• delete the AppStore cookie
• rebuild the Spotlight index (found a recommendation to do so somewhere)
• logged out and in the AppStore
• delete some of the updated Apps and re-installed them

without any effect. Today, I got an update for another application; the update count was incremented and was not reset again.

Any ideas?

Answer 1

A reboot did the trick. Badge is reset.

Answer 2

Rather than rebooting, you can just type killall Dock from your terminal application. It will reset the dock and clear the badges.