Talk:Tutorial: Troubleshooting/@comment-26228671-20150321064526/@comment-26171095-20150321090216

If you're on Windows 8 as Dragonjet asked, then this may be relevant: http://ch.nicovideo.jp/kikikaikai/blomaga/ar592309.

The link says to change your time server to ntp.nict.jp and update. The registry stuff at the end is just to shorten the time between updates.