Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi Tam,
Welcome to Microsoft Community.
Let us restart the computer in clean mode and run the Office fix it, then try to install Office in normal mode and check if it helps.
Refer to the article below to start the computer in Clean Boot. (The suggestions in the article also applies to windows 10 as well)
http://support.microsoft.com/kb/929135
Note: Ensure to restart the computer in normal mode by following Step 7, after completing the troubleshooting steps.
Kindly click on the following link to run fixit.
Once done try to log into the Microsoft account and download and install Office.
I hope the above suggestion helps. If you need further assistance, get back to us and we will be glad to assist you.
Thank you.