Solution: You have a conflicting Office version. Run setup.exe /configure remove.xml (a script that uninstalls old Office) before installing the new version.
To tell the tool what to download, you need a configuration file. The easiest way to create this is using the Microsoft 365 Apps Admin Center . microsoft office 365 offline installer
The is a downloadable tool designed for users with slow or unreliable internet connections who need to install the full suite of Office applications without a continuous online stream. Key Benefits Solution: You have a conflicting Office version