In my hotel in Shanghai, I get the error message

MathOverflow requires external JavaScript from another domain, which is blocked or failed to load.

Is there a work around for this? Posts load very slowly, I cannot vote, some comments are not viewable,...

• Perhaps it's a slow internet connection? (I'm not sure, since I'm not a computer expert.)
– user62675
Jun 16 '14 at 1:00
• Perhaps you're enjoying Chinese censorship? MathOverflow now works under https, so you might just try changing the URL to https://mathoverflow.net/ and seeing what happens. Alternatively, presumably you have ssh access to some computer back home. Run ssh -D 1080 username@math.tamu.edu, and then tell your browser to use a SOCKS proxy on port 1080. (Google for more details, or just ask me.) This will tunnel you out of the Great Firewall. Jun 16 '14 at 1:57
• Thanks for the fix, Scott. Jun 16 '14 at 8:33
• I have yesterday seen this message as well, from Germany -- but the problem was intermittent -- sometimes I saw that message, sometimes the formulas were rendered strangely or not at all or omitted completely. But now everything seems to work well again.
– Stefan Kohl Mod
Jun 16 '14 at 8:44
• Your problem was likely different, Stefan. My problem was the Chinese firewall that had to be circumvented. Jun 16 '14 at 12:38
• Scott's comment should probably be an answer. Jun 16 '14 at 20:25

This is due to some very aggressive firewalls permitting our sites, but not our CDN (sstatic.net). You'll hit this, unfortunately quite often, in mainland China. If you're in the Special Administrative Regions (HK/Macau, etc) then you should be fine.

You have two options:

• Go with https:// (which sometimes works)
• Go with a proxy service like Hola Internet1 or similar if that fails

It's hard to design around a use case of someone intentionally breaking the Internet, so unfortunately, there's not much we can do to get around it (if we want to use a CDN, which we really need to do). We're hoping that enough bug reports (yes, the GWOC does have a bug tracker so 'legitimate' domains can be unblocked) finally gets them to stop blocking our CDN.

1We don't officially endorse any third party proxy, I've just had luck with them, as have users that acted on my recommendation to try them.

• I tried https; it does not work. I did not try Hola, but Scott Morrison's second suggestion allows me to work around the problem. If Scott writes it as an answer I will accept it. Jun 23 '14 at 15:17