OK, I confirmed the issue is cookies. I cleared the cookies for localhost, and the page loaded. This is obviously an error unique to the fact that I also develop against localhost, and for some reason, the cookies aren’t uniquely including the port as they should.
A couple of suggestions:
- Duplicati should probably render an error message if it can (if it had loaded
400 Bad Request, I might have narrowed it down faster) - I wonder how hard it would be to configure something like
my.duplicati.comto point to127.0.0.1, and use that instead oflocalhost? Obviously it’s pretty easy to add to the DNS, assuming someone has access to it. I don’t know if it would have any unexpected consequences.