Disable Online Template Office 2013/2016
Microsoft office 2013/2016 open excel word everytime will link online template through templateservice.office.net
disable
Regedit
[HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\Internet]
“UseOnlineContent”=dword:00000000
This will stop Office (and Word) to display “Templates from Office.com” in the File New dialog and restrict the templates to the installed ones.
source:https://answers.microsoft.com/en-us/msoffice/forum/msoffice_word-msoffice_custom/is-is-possible-to-disable-officecom-templates/aea8d6c9-879f-418d-b78e-f6c5419ca928