MS Word: Click on the File ribbon and select 'Options'.Please follow the Windows or the Mac troubleshooting items: If the CWYW tools do not work or the EndNote X7, X8, X9 or 20 CWYW toolbar/ribbon does not appear:

Update your MS Word to the latest updated version. To see which version you have on Windows choose 'Help > About EndNote' and on Mac 'EndNote > About EndNote'. You will need EndNote version X7.5 or higher, EndNote X8, EndNote X9 or EndNote version 20. Update to the latest version (Windows: Help > Check for Updates / Mac: EndNote > Check for Updates). If you have EndNote X7, update EndNote to version X7.7.1 (latest X7 version). If you have installed EndNote X7.5 or higher, EndNote X8, EndNote X9 or EndNote 20 and the Cite While You Write (CWYW) toolbar does not appear in MS Word or the CWYW tools do not function as expected, please follow the following instructions: EndNote Windows or Mac, Cite While You Write CWYW tools missing or disabled in MS Word