It seems the Sophos firewall at work blocks all access to lemmy instances.
Join-lemmy.org and lemmy.ml are blocked completely. I can see the front page on sh.itjust.works and lemmy.world, but clicking on a post results in an infinite loading circle. When I try to log in on either site I also get a loading circle on the login button.
Any ideas if I can circumvent the firewall?
Sounds similar to the reported issues with websockets. I believe they are moving away from those soon and I think it might solve the issue you have as well. I tried to find the GitHub issue/PR link but can’t find it right now, sorry.