To revert to an earlier released Click-to-Run version of Office, you must use a command line and specify the build number you would like to revert to. For readability, at some points this guide may only reference Microsoft 365 even when it also applies to the aforementioned Office versions. Note: All Office 2019 editions as well as non-volume license installations of Office 2016 use the same “Click-To-Run” technology as Office as part of a Microsoft 365 subscription. Reverting to a previous build number (from before the update) of Microsoft 365 is possible but is very different from a msi-based installation. Microsoft 365 installations are “Click-To-Run” installations which are essentially “always up-to-date”. Microsoft 365 installations, indeed use a different update mechanism than the “msi-based” installations of Office 2013 and Office 2016. I’m using Office 365 Home Premium, which is updated automatically via the cloud and not Windows Update if I’m not mistaken. I wanted to uninstall an Outlook update but when I follow the instructions to uninstall the updates via Control Panel, I don’t see any Office updates listed there.