All of a sudden today I cannot log into the web interface on any of my duplicati instances via Firefox.
Still works fine in Chrome.
Get “Login Failed: Unauthorized”
I deleted cookies and it still doesn’t work.
Did you try Private Browsing mode in Firefox? (Private Browsing - Use Firefox without saving history | Firefox Help).
This has happened to me sometimes that some websites do not work even if I clear cache, and I try them in private browsing / incognito mode and it suddenly works.