Installing Office Product
Once you have done the uninstallation part, now do a clean installation.
Login to your Microsoft office account Sign in to your account
Go to your dashboard to see the product you purchased.
Select “Install Office “ option and then let it download, (you may see click Save, Run, Setup, or Save File depends on browser type, select “save” for future purpose)
Go to downloads in your computer and Double click on office setup file to install.