https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2013/03/20/fix-remove-optimized-for-bing-and-msn-from-ie-titlebar.aspxSeems some Microsoft software (probably Bing bar) version is changing Internet Explorer title bar to write “optimized for Bing and MSN”. To remove this: Use Start/Run or Start/Find and type there regedit then press ENTER to launch the Registry Editor.elCommunityServer 2.1 SP3 (Build: 20423.1)