Find the .img or .iso file you downloaded (e.g., OfficeProPlus2021Retail.img ). Mount the Image: Windows 10/11: Right-click the file and select "Mount" .

Navigate to the Microsoft Download Center (official URL: microsoft.com/en-us/download/details.aspx?id=49117 ). Download the .

Open the configuration-Office365-x64.xml file in a text editor like Notepad. Customize it to match your product version. A basic configuration looks like this:

Use code with caution.

Execute the specialized download flag by typing the following command: setup.exe /download configuration.xml Use code with caution.

: Select Services & Subscriptions and find your Office product. Click Install .

Do you need assistance encountered during the offline setup process? Share public link

file to "mount" it as a virtual drive. Open the drive and run Microsoft Support Method 2: For Office 2024, 2021, or Business (Advanced) Business versions and one-time purchases often require the Office Deployment Tool (ODT) to create an offline installer. Microsoft Learn Use the Office offline installer - Microsoft Support

Always ensure the downloaded file is not corrupt.