Endnote keeps disappearing from the Word 2016 toolbar

Hi Tony,

Thank you for your help. It solved my problem. 

I had followed the first set of steps before (found somewhere in the internet) but did not follow the the removing and adding Endnote CWYW.dll add-ins. I did this time after your advice and now it is working fine. Thank you for spending your time to help me. 

Kind regards,

Arjun