Hi,
How long have you been runing this Office 2013 instance on your machine? Is this a recently happened issue, or actually none Office updates have ever been received on this machine?
Updates for MSI (non-Click-To-Run) version of Office will be offered via Windows Update. But please note that, by default Windows Update only updates Windows itself.
In order to get updates for Office and other Microsoft products as well, youll have to update your Windows Update to Microsoft Update. So, please have a check on this, you can
visit this Microsoft site which works for all versions of Windows.
Also, maybe automatic updating is turned on. Here is a collection of
all released Office updates, you can have a check, compare it with your update history list and see whether they've been installed or not.
Review your update history: Control Panel\All Control Panel Items\Windows Update\View update history.
Regards,
Ethan Hua
Forum Support