System error "http://frontier.ffxiv.com/arr_win/index.html?rc_lang=en=us"

[Necavit]

Redownloading the installer still doesn't work for me. The only workaround that I've found is running CCleaner before starting the launcher. Seems to work well enough for now. I hope they fix this problem soon. It's really annoying, but it doesn't seem to be affecting a lot of players.

[Andruism]

I had this same problem. Looked at this thread, and downloaded newest version of CCleaner to see if that would do anything, but without actually doing anything different I tried opening the launcher and it worked first time. Weird.