If this solution does not fix the issue, please refer to the Cite While You Write FAQs page from the EndNote website (linked below) - scroll down to find the answer that fits your versions of Word and EndNote. To re-instate EndNote X8/X9 in Word on Macs, please see the first link below. Make sure the box beside it is ticked, then click OK.
Be more productive Find the feature you need fast and create documents more easily with built-in automated design and research tools. If it is not listed, then go down to the bottom of the window to the Manage drop-down list. Start quickly with the most recent versions of Word, Excel, PowerPoint, Outlook, OneNote and OneDrive combining the familiarity of Office and the unique Mac features you love.Under the heading Active Application Add-ins, check whether you have the EndNote Cite While You Write COM Add-in (see the Type column).Select Add-Ins from the left hand menu.In Word, click the File tab and choose Options.To reinstate the EndNote tab in Word on Windows devices, please follow the instructions below in the first instance: Below are solutions for both Mac and Windows devices: There may be a number of reasons why, if you have had the Cite While You Write (CWYW) add-in showing in Word previously, it may have dropped off.