Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello, I’d start by reinstalling Microsoft AutoUpdate:
Save your work, then quit all Office apps and AutoUpdate.
Download and run Microsoft’s latest AutoUpdate installer: https://go.microsoft.com/fwlink/?linkid=830196
Open Word >> Help >> Check for Updates, then try updating again.
If it still fails, please share your macOS version and a screenshot showing which apps have errors. Hide any personal information.