: While Office 2013 was compatible with Windows 7 through early versions of Windows 11, it reached its end of support on April 11, 2023, and no longer receives security updates. Microsoft Activation Scripts Important Considerations Security Risks
The v2021 edition specifically targets the installation of Office suites ranging from 2013 to the LTSC 2021 versions. Recent updates, such as version 7.7.7.7 (2025), have extended support to include Office 2024.
The tool is often distributed in two versions: OInstall.exe (Standard) and OInstallLite.exe (Lite). C2R Install (Standard) Install Lite (v. 2021/2024)
technology to stream and virtualize the installation, which can be faster than traditional methods. Activation