Office 2016 list of updates location

May depend on Office exact version, most click to run Office products are updated within Office, and not Win update.

It would be unusual for a standard main stream Firewall utility to block an office update

I know Office updates within itself, that's why Click-to-run is blocked by the firewall twice. The whole idea of blocking was to prevent updates and it was able to update anyway. So this means it's using something else instead. It's probably using bits which I should re-image the system and disable it to find out.

As far as I know, all firewalls (except built-in windows) have the ability to block anything in a OS. If yours is unable to do this most simplest task, you might want to consider switching to a more capable one.

I still need to find out where Office list the history, date & time, build versions of installed updates and how to uninstall if needed.

Why would I want to block an Office update? - since office97 I've never had any need to block an Office update, and no update has resulted in anything untoward.

To uninstall an Office click to run version update, you have to do so via a cmd.

Installed Updates (not office) are available in control Panel (There is no similar list of Office updates)

To revert to an earlier released version of Office 2013 or Office 2016 as an Office 365 installation, you must use a command line and specify the build number you would like to revert to.

In broad terms an Office click to run update is a full install of a new office version, as per the version/build#

I only mentioned the firewall because you said, "It would be unusual for a standard main stream Firewall utility to block an office update".

Blocking a component whether it's part of the operating system or other software is not unusual at all, it's the very basic behavior of a firewall. I was only suggesting, if your firewall was not able to accomplish this simple task then you might want to get a more capable one. I was not suggesting to block Office updates.

Why are you suggesting to revert Office? How does this answer my question? I was asking -  where does Office list its history, date & time, build versions of installed updates and how to uninstall if needed?

You fail to understand, a standard firewall will not block office update, unless the user chooses to modify the firewall settings.

Click to run Office 365 does not list Office updates, history

I stated what you would need to do to revert to an earlier build, but apparently the instructions were not clear to you.

To be clear, a 365 Office update is effectively a full installation of the new Office build version# - it is not an incremental update, as a win update is, or many msi updates are

You can, via any 365 component switch off auto update, no need to resort to the firewall

Welcome to the brave new world of Windows 10 and Office 365 SAAS (Software as a Service).

MS knows all, MS knows best, MS is in total control, and you do NOT have any (well a tiny bit) of control.

In a business setting you can use the "Deferred Update" channel to control updates a little.

There no longer is a list of Office CTR (2016 & 365) Updates that I know of. MS just pushes them out when they feel like it with no documentation. The only documentation I know of is this page:

https://support.office.com/en-us/article/Version-and-build-numbers-of-update-channel-releases-ae942449-1fca-4484-898b-a933ea23def7?ui=en-US&rs=en-US&ad=US

It list the "version" and "build" numbers that MS uses to track changes. The page indicates there was a new "build" pushed out Apr 21. That is probably what you saw.

On the left margin of that page there are also links to more information about managing updates.

I guess I did fail to understand because in my original post I stated, Office updates were blocked - we intentionally blocked it but Office updated anyway.

I didn't realize an update is actually a complete full installation. I thought it was bug fixes and security patches, only. That explains the 10 minute installation. 

Thanks for the feedback, I should have guessed it would be a lot like Win 10. I guess we need to dump Office after all, when the subscription runs out. It's not acceptable behavior for MS to assume that it's OK to install at their whim without giving detailed information and the ability to uninstall. On the bright side, MS just saved the company thousands of dollars by alienating us. LibreOffice is a fine FREE replacement to Office.

Now hopefully there is a solution for the OS in 2020, we won't use Windows 10.