Office 2016 has to be activated again after some updates
Open a command prompt and go to your Office installation folder
c:\Program Files (x86)\Microsoft Office\Office16
c:\Program Files\Microsoft Office\Office16
Execute the following command
cscript ospp.vbs /dstatus
Get the 5 last characters of the installed Microsoft Office product key
Execute the following command ( XXXXX being the last 5 characters of your product key)
cscript ospp.vbs /unpkey:XXXXX
Check if your product is now activated properly. If not you may have to activate it again from Word or Excel using the Change Product Key procedure.
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