There is a new mandatory update available for ColdFusion 10. This update is required for proper functioning of the auto update functionality in ColdFusion 10. Adobe strongly recommends that you apply this update.
Find out more at:
Inform yourself how to run the update:
I already updated my Windows Production, Windows Development and Mac Development Servers and did not notice any hicups. The install requires you to type a command in your command prompt or terminal. Just in case you do not have Java installed on your windows machines you can run the java call from the jre/bin folder inside your ColdFusion10 install folder (You can also add this to your PATH so you can run the java call from anywhere).