Hi Leroy Douglas,
Thank you for getting back to me regarding the Chrome issue.
My bad as I was not clear - I don't have any other apps installed in the new M4 Max except Office 365. Both Safari and the Office apps are functioning as expected.
I've re-tried several troubleshooting steps as you suggested: I removed the Chrome icon from the Dock, uninstalled Chrome, and then reinstalled a fresh copy from the official Office website. I also confirmed that the Chrome app was correctly installed in my Applications folder and attempted to launch it directly from there, but without success. That is, Chrome never opened on my desktop.
When I click on Google Chrome in the Applications folder, the Chrome icon would appear in the Dock, bouncing once or twice before stopping. However, no browser window opens, and the icon just stays there. Even if I right-click the icon in the Dock and select "Open," nothing happens.
I am going to try what AI Weir have suggested but if all fails afterwards, I am inclined to reset it back to factory configuration and re-do everything. It's really strange that Chrome appears to be installed properly but not able to open or launch. I also tried to disable iCloud - Private Relay to no avail.