When launching Excel, Word, PowerPoint, or OneNote it is possible to see the message "This action is only valid for products that are currently installed error". Don't Panic!
The cause of this problem is the presence of an old version of Office (often 2010) at the same time as a more recent version ("365"). To resolve this, before continuing verify the current version from portal.office.com can be downloaded. After verifying the software can be downloaded, proceed:
Right-click on the Windows menu and select Settings
Click on Apps
In the search for apps, enter "Off", this will locate Microsoft Office versions. In particular, look for "click to run" versions of Office that may have shipped with the computer.
Uninstall all older versions of office.
Install the latest version of office from portal.office.com. The most recent in June of 2023 was "Microsoft 365 Apps for Enterprise".