If you cannot watch the video correctly this may be due to concentrated access on the servers. Please try reloading several times or avoid watching the videos during the night or in busy hours.
*Please take these steps on your discretion as changing the settings on your browsers or the security program may have an effect on the viewing in other site.
Watch in Nico Nico Douga's recommended settings.
Please try watching on a computer environment that meets the requirements of the recommended settings or try watching the video in other browser.
Delete cookie browser or delete temporary internet file
Please refer to the internet for details as steps may differ in each version.
Saved information on the player may be deleted depending on the browser. Additionally, if you delete the cookies, you will be logged out.
Tool > Internet Option > General > Go to "Delete" in browsing history to "Delete File" and "Delete Cookies"
Firefox > Option > Privacy > Show Cookies > Remove all Cookies > Close > select "OK".
Tool > Option > Advanced > Select "Remove Now" in the network tab.
Safari (Only Mac)
To delete Cookies : Tool > Edit > Settings > Security > Show cookies > Remove All
To delete cash : Tool > Edit > Empty Cash > Empty
Change the setting on the "Internet Option" for Internet Explorer
Tool > Internet Option > Security
Click on "Reset all zones to original setting" or go to "Customize Level" and check on "Enable" for all the checkboxes or check on "Display Dialogue".
Tool > Internet Option > Privacy
Please lower the settings below "Medium-High". If you have the setting on "high" you will not be able to login to niconico.com.
Change the setting on the security soft
The connection and access to Nico Nico may be restricted due to your security software. In regards to how to change the software's settings, please refer to the provider.
Deletion and Re-installation of the Flash Player
Please delete the Flash Player and install the latest version of the flash player. Please perform this process even if you already have the latest version installed.
Next, Logout > Reboot > Login and try watching the video again
■Correct the date and time on your computer
■If you have multiple browsers open, please close them
■Reboot the router or modem
■Change to wired connection if you are using wireless
■Remove special proxy if you have one
■Uninstall tool related items
■Contact your provider
If you are having a similar problem in another video website as well, your provider may have placed a restriction on the bandwidth. If this is so, please contact your provider.
You may also not be able to watch the video correctly due to your computer environment, router or internet line. If this is the case please watch on another computer or a different provider.