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How to Download a Microsoft Office ISO or Offline Installer
Question details
The user needs to download an offline installation package or ISO file for Microsoft Office to install the software on a device without an active internet connection.
- Product
- Microsoft Office 2019, Office 2021, Microsoft 365
- Device & OS
- not provided
- Scenario
- Attempting to deploy Microsoft Office on a PC with limited internet access or wishing to keep a local backup of the installation files.
- Observed behavior
- The user requires the full standalone offline installer instead of using the default web-based installation tool.
Ensure you have your Microsoft account credentials ready, an active Office subscription or license linked to your account, and at least 5 GB of free disk space for the installation files.
Download the Offline Installer for Work or School Accounts
Use this method if your Microsoft 365 subscription is managed through an employer or educational institution.
Work or school accounts require you to generate the offline installation file directly from the Microsoft 365 portal. This ensures you receive the correct version authorized by your organization.
Open your browser, navigate to Office.com, and sign in with your work or school account credentials.
From the Microsoft 365 dashboard, click on the 'Install Office' button, then select 'Other install options' from the dropdown menu.
Under the 'Offline installer' section, check the box to download the offline installer and choose your preferred language.
Click 'Download' and save the installer to your computer or an external USB drive for offline use.
Download the Retail ISO for Personal Accounts
If you purchased a retail version of Office 2019 or Office 2021, you can download the complete IMG/ISO file from your Microsoft account.
Try WPS Office: A Lightweight and Free Alternative
Skip the massive ISO downloads and lengthy installation times. WPS Office is a lightweight, fully-featured office suite that installs in seconds and requires significantly less disk space, all while maintaining excellent compatibility with Microsoft formats.
- 1. Download the installer: Visit the official WPS Office website and click the download button to get the lightweight installer.
- 2. Run the quick setup: Open the downloaded file and follow the quick setup wizard to install the software in seconds.
- 3. Open your files: Launch WPS Office and instantly open, edit, or save your existing Microsoft Word, Excel, and PowerPoint documents.
Frequently Asked Questions
Do I need an internet connection to use the Office offline installer?
You do not need an internet connection to run the installation process itself. However, you will need to connect to the internet briefly after installation to activate the product and link it to your account.
How do I open or mount the downloaded Office ISO/IMG file?
On Windows 10 and Windows 11, you can simply right-click the downloaded ISO or IMG file and select 'Mount'. This will open it as a virtual DVD drive in File Explorer, allowing you to run the setup.exe file.
Can I use the Microsoft Office offline installer on a Mac?
For macOS users, the standard Microsoft Office download is already provided as a full offline installation package (.pkg file). You can download it directly from your Microsoft account and install it without needing a separate offline tool.
How large is the Microsoft Office offline installer file?
The offline installer or ISO file for Microsoft Office is typically around 3.5 GB to 4.5 GB in size, depending on the version and language selected. Ensure you have a stable connection for the initial download.
