Updates still succeed (LastScenarioResult: Success), so this appears to be a cosmetic error from legacy registry validation. It confuses admins and monitoring systems.

You can delete some of them to free up some memory, but Windows will automatically create log files when you try to run applications again. Let us know if you need further assistance.

There are instances in which Microsoft Office 365 patching fails and the deployed action returns a "Failed" status even if all the lines of the actions were executed. Run the following steps: Restart the Microsoft Office Click-to-Run Service from Services.msc for the logging to take effect.

When run against Office 365 or Office Click-to-Run versions, the noop.exe calls the OfficeC2RClient.exe which then reaches out directly within the Office application to Microsoft and pulls down the necessary updates.

Learn how to Repair, update or uninstall Microsoft Office Click-to-Run. Click-to-Run technology, which is a new way to download and install products of Microsoft Office.

Fix Microsoft Office Click-to-Run not working on Windows 10 or 11 with repair, update, service, activation, reinstall, Outlook, and network troubleshooting steps.

Hello, I would like to implement Office updates into our scheduled maintenance automation. Therefore, using OfficeC2RClient.exe and a CMD should be a convenient way to achieve this.

This diagnostic tool can be used to collect logs to troubleshoot install, update, or other deployment scenarios for Microsoft 365 Apps deployed with Click-to-Run (C2R).

The log excerpt above already suggests that it is somehow related to the telemetry of the Office Click-to-Run service. Also in the Technet forum you can find this thread from 2017 where someone describes the effect.

Install and update content for Microsoft Click-to-Run products through BigFix Patches for Windows.