Uninstall the default office 365 installation that comes preinstalled. Maintenance Note - https://gist.github.com/mark05e/0a04a54c1e8489c770bd91e4910d7df9

uninstall-microsoft365.ps1

#ref: https://www.reddit.com/r/sysadmin/comments/jjtpnp/script_to_silently_uninstall_builtin_office_365/

Get-ItemProperty -Path HKLM:\SOFTWARE\Microsoft\Office\ClickToRun\Configuration

$OfficeUninstallStrings = ((Get-ItemProperty "HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*") `
    + (Get-ItemProperty "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*") | 
    Where {$_.DisplayName -like "*Microsoft 365*"} | 
    Select UninstallString).UninstallString

    ForEach ($UninstallString in $OfficeUninstallStrings) {
        $UninstallEXE = ($UninstallString -split '"')[1]
        $UninstallArg = ($UninstallString -split '"')[2] + " DisplayLevel=False"
        Write-Host "Going to Run $UninstallEXE with $UninstallArg"
        Start-Process -FilePath $UninstallEXE -ArgumentList $UninstallArg -Wait
    }
    
Write-Host "Uninstall Completed!"