Oxid 6 – Admin Login -Fehler! Ihr Browser unterstützt keine Cookies.

The reason for the error is that encoding of the config.inc.php, please open a your config file with text editor (Notepad++, PhpStorm or etc.).

config.inc.php “Fehler! Ihr Browser unterstützt keine Cookies” fixing.

And Top Menü -> Encoding -> Convert to UTF-8 and save then upload.