[Someone1234]

If you want to prevent this without installing the Office ADMX January update, you can set the following registry entry:

      [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\office\16.0\common\officeupdate]
      "preventbinginstall"=dword:00000001

Save the above in a .Reg file and execute.

[jlgaddis]

FWIW, the (untested) PowerShell equivalent would be:

  New-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\office\16.0\common\officeupdate" -Name "preventbinginstall" -PropertyType DWord -Value 1