Make sure to download a new offline installer every 3-6 months to ensure you are not installing severely outdated software.
Click the Download button. This will download a single file.
Office 365 Offline Installer Exclusive: The Ultimate Deployment Guide
To install Office 365 on any target machine without using the internet, open an elevated Command Prompt on that machine, navigate to your file folder, and run: setup.exe /configure configuration.xml Use code with caution. office 365 offline installer exclusive
After the installation finishes, you can launch any Office app (like Word or Excel). You will need to sign in with your Microsoft 365 account credentials to activate the license. While the installation itself can be completely offline, the initial activation does require an internet connection, or access to an internal KMS/Active Directory-based activation infrastructure for volume-licensed products. Subsequent activations may also require periodic internet access to validate the subscription, except for volume-licensed, perpetual products like Office LTSC which are designed for long-term disconnected environments.
Why?
While the installation is offline, Office 365 still requires periodic internet access to check licensing and download updates. Make sure to download a new offline installer
You will still need to activate Office using your Microsoft 365 subscription credentials once internet is available, or via KMS/Active Directory-based activation in enterprise environments. Important Considerations and Best Practices
First, you need to get the ODT and prepare a dedicated folder on a machine that has internet access.
Understanding the "why" is just as important as the "how." For many users, the online "Click-to-Run" installer is perfectly adequate. However, offline deployments are rarely about convenience; they are about necessity. You likely need an offline installer for one of several critical reasons: While the installation itself can be completely offline,
The entire ODT process can be and often is automated using scripts (e.g., PowerShell or batch scripts). Numerous IT administrators have created scripts that handle everything from downloading the tool, generating the configuration file, downloading the Office files, to installing Office silently with just a few clicks. These scripts streamline the process, reduce manual errors, and allow for rapid, repeatable deployments.
For reference, a standard 64-bit Enterprise deployment configuration looks like this:
While there isn't a widely recognized official product specifically titled "Office 365 Offline Installer Exclusive," this draft review focuses on the utility of the Microsoft 365 Offline Installer
