[SOLVED] Duplicati won't start (red icon)

Hi, I noticed today that the Duplicati icon is red and the web address won’t resolve (400 error) on Windows 10 Pro x64.

I’ve rebooted multiple times, and I’ve installed the latest copy over it, without success (duplicati-

Running Duplicati.GUI.TrayIcon.exe from command line does not show an error, it appears to start, but I can’t get the web UI to show up at all (red icon).

I have heard some recommendations to uninstall and remove all folders… which folders should I remove?

The issue, after some searching, was due to a cookie issue. I tested it by loading the web app in incognito mode, and it worked. The red icon means there were errors, not that duplcati wasn’t loading, but it seemed as if the web app simply wasn’t responding.

Clearing cookies solved the issue.

Thanks for reporting back.
Would you please mark the post as solved to help others?