Abstract Since the introduction of Click-to-Run (C2R) with Office 2013, Microsoft has fundamentally transformed the deployment, updating, and servicing model for its flagship productivity suite. This paper provides a comprehensive analysis of the C2R installation technology as it applies to Office versions from 2013 through 2024. It covers the architectural shift from Windows Installer (MSI) to virtualization-based streaming, the deployment tools (Office Deployment Tool, ODT), configuration XML management, update channels, and the implications for enterprise system administrators. Special attention is given to the transition to the current Perpetual Enterprise versions (LTSC 2024) and Microsoft 365 Apps. 1. Introduction Historically, Microsoft Office (versions 2000, XP, 2003, 2007, 2010) was installed via Windows Installer (.msi) technology. This method was prone to "DLL hell," lengthy installation times, administrative privilege requirements, and cumbersome patch management. With Office 2013, Microsoft introduced Click-to-Run (C2R) as the default deployment technology for consumer and small business editions, eventually making it the exclusive method for Microsoft 365 Apps and later volume-licensed perpetual releases (Office 2019, 2021, 2024).
<RemoveMSI> <IgnoreProduct ID="InfoPath" /> <IgnoreProduct ID="Publisher" /> </RemoveMSI> If not handled, side-by-side MSI and C2R installations of the same major suite lead to registry conflicts and broken file associations. | Symptom | Likely Cause | Resolution | |---------|--------------|-------------| | Installation stuck at 0% | C2R service not running | Start ClickToRunSvc manually. | | "Something went wrong" with error 30088-27 | Corrupted virtual disk | Run C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe /repair | | Updates failing with 0x80070005 | Permission issue on %LocalAppData% | Reset ACLs or run repair as admin. | | Multiple Office versions conflict | Broken virtual environment | Use the SaRA (Microsoft Support and Recovery Assistant) tool. | office 2013-2024 c2r install