I'm really sorry to read that. Did you try updating the firmware recently? Usually the 404 error happens after updating the firmware using the .bin file is rather than the .tar file. Only the .tar includes the Web UI.

HERE IS OUR FIX!Make sure that your config contains all of the following:ip http serverip http secure-serverip http bannerip http authentication localAfter adding the last two lines and reloading the switch everything was fine! This was bugging us fo...