Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi,
Based on the error, it appears there is a failure during the Office uninstallation process. You can try using the Office uninstallation method found at the link below:
If that doesn't work, try performing a manual uninstallation:
https://support.microsoft.com/en-US/Office/lifecycle/manually-uninstall-office
After that, try installing Office again.
Which version of Office are you trying to install?
Thanks.