Rev1727 Date: 21 November 2015 7:50:19 pmSearch engine YouTube updated to YouTube API v3
This warning is from youtube, not Elxis. 403 means forbidden/not authorized. Most probably you don't use an API key for youtube. To search youtube you must own an api/server key. You can create one here (login first): https://console.developers.google.com After that go to Elxis, edit YouTube search engine and in parameters tab type your youtube API key.