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.