A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I found something that works for me and stopped the annoying messages about genuine office.
Download Office uninstall support tool from here: https://support.microsoft.com/en-us/office/uninstall-office-from-a-pc-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8
Just follow the instructions; the PC will restart few times, the tool is removing everything related to Office on your machine and then, the same tool can install Office 365 for you - just sign in with your account and follow the instructions again. Very simple, for 15 or so minutes.