To download the Microsoft Office 365 ISO offline installer repack, follow these steps:
Downloading the standard Office 365 installer (a tiny 5MB stub) is easy. However, that stub downloads 4-6GB of actual program files. If you live in a rural area with 1Mbps DSL or have frequent dropouts, the online installer will fail repeatedly. An ISO allows a single, resumable download via a download manager.
Open Command Prompt as Administrator. Navigate to C:\ODT . Run the download command:
Microsoft throttles downloads via the CDN. Using the Office Deployment Tool (ODT) is actually faster than the consumer portal. The ODT uses segmented downloading, which is more efficient.