If there is a direction telling you to update your Flashplayer on your in the video player, please follow the procedures below.
Download the uninstall program, delete all the FlashPlayer from the computer including the past versions. *Delete the program even if it is the latest version.
Activate the install program and after installing the FlashPlayer, please check to see if you still get the same message at Niconico.
* Please close all programs and browsers before proceeding.
If the problem persists, please notify us the message displayed in your browser from Inquiry /Feedback.