Visual Studio For Office Runtime [2025]

You are deploying a custom solution to a client’s machine. The VSTO Runtime must be present on every computer that will run your software. System Requirements & Prerequisites

While Microsoft’s strategic focus has shifted toward web-based extensions, the VSTO Runtime remains a critical piece of infrastructure installed on millions of corporate workstations. For developers building mission-critical, high-performance Office automation, mastering the VSTO Runtime is not a nostalgia trip—it is a practical necessity. It proves that sometimes, the most important software is the software you never see. visual studio for office runtime