I installed Office 2016 from an MSI installer, but the updates apparently still happen via a Click-to-Run process. Susan Bradley has a nice tip here on changing from monthly to semi-annual updates (which should be more stable but still get security updates). This Microsoft blog post has a bit more detail. Before the update, in
Microsoft 365 (Office 365 ProPlus) Servicing Channel Changes Explained
Change Microsoft Office to Semi-Annual Channel
Topic: 7000001 Changing Microsoft 365 click to run to slower
SCCM Managed Office 365 Clients, Versioning – Modern Cloud Management
Microsoft Office update channels
Microsoft 365 Lifecycle Management with MECM (SCCM) and Intune - Cloudforce
Easily controlling the Office update channel by using administrative templates – All about Microsoft Intune
Microsoft 365 Apps update changes: What security admins need to know
SharePoint Admin: How to Change Your Channel for Project Pro Feature Updates - Integent
Change Microsoft Office to Semi-Annual Channel
Microsoft 365 Apps Semi-Annual Channel not switching to Current Channel : r/SCCM
Switching to the Office 365 Monthly Update Channel
How to Change the Update Channels for Microsoft 365 Apps
Understanding Office update channels, Changing for 365 Home or 2019 Retail - Microsoft Q&A
Topic: 7000001 Changing Microsoft 365 click to run to slower