Lena’s final report to her manager was short: "C2R install completed. No USB required. Office is now always up to date, always ready, and never a weekend headache again."
Within one week, Lena retired the yellow USB drives. Her team’s Office installation time dropped from 45 minutes to (with background streaming starting in 30 seconds). Update-related help desk tickets fell by 80% because C2R updates ran automatically during system idle time.
setup.exe /configure config-office365-enterprise.xml office c2r install
C2R is Microsoft’s modern deployment and streaming technology for Office products (2013 and later). Unlike the old MSI-based installs that downloaded and copied every file before running, C2R works more like streaming a movie.
The Silent Shift: How Click-to-Run Changed Office Forever Lena’s final report to her manager was short:
In the mid-2010s, IT departments at mid-sized companies had a familiar, tedious rhythm. Every few months, a system administrator named Lena would receive a bright yellow USB drive labeled "Office 2013 SP2." Her job was simple: walk to each of the 200 desks in her building, insert the drive, and run setup.exe from the traditional Windows Installer (MSI). The process took 45 minutes per machine—reboots, progress bars, and the occasional blue screen.
Then, one Tuesday morning, her manager handed her a single sheet of paper. On it was written: "Office C2R Install. No USB. No waiting. Deploy from cloud." Her team’s Office installation time dropped from 45
Today, nearly all Microsoft 365 Apps (formerly Office 365 ProPlus) use C2R. It supports Windows, macOS, and even Linux via web containers. The technology has been adapted for other Microsoft products like Visio and Project.