There is more information about this issue that is not being shared for confidentiality reasons. There's no shade being directed with a statement like that. This isn't a client issue but if people do happen to find ways (like @NojusK did) or other specific software + versions, it is good to post that here. According to Xper, the issue doesn't seem to be with the server itself, rather likely with some other piece of infrastructure somewhere between the client and server.
The issue remains, I've had to change browsers to visit the site.