> There's a problem with the Wayback Machine in specific which can kill your ability to access it quite silently, unless you know how to use the browser's development tools and interpret headers.
> It has to do with cookies: Somehow, the Wayback Machine sets cookies... and sets cookies... and keeps setting cookies, until it overflows its own ability to accept cookies. At that point, your browser tries to access a Wayback Machine page, handing the server all of the cookies it currently has, and the server refuses to deal. It absolutely denies everything, sending an error header and a blank page. You have to clear all web.archive.org cookies to get anything at all, at which point it works perfectly.
> I've completely solved this problem by blacklisting web.archive.org in browser cookie blacklists. I haven't had it happen since then. As far as I'm concerned, the problem is diagnosed and just needs to be solved. At their end.