<Configuration> <Add OfficeClientEdition="64" Channel="Current"> <Product ID="O365ProPlusRetail"> <Language ID="en-us" /> </Product> </Add> </Configuration> Then run setup.exe /download config.xml (online – once) and setup.exe /configure config.xml (offline – many times). The M365 offline installer is a powerful tool, but it’s not for casual users. If you have a reliable internet connection and only need Office on 1–2 devices, stick with the standard online installer – it’s simpler and always up to date.

However, if you manage multiple PCs, work in low-bandwidth areas, or need repeatable deployments, the offline installer is a . Just be ready to spend 20 minutes learning the Office Deployment Tool. Final Verdict: ★★★★☆ (4.6/5) – Excellent for its intended audience, clunky for everyone else.