Visual Studio 2010 Tools For Office Runtime _top_ ✪

| Aspect | Status as of 2026 | |--------|-------------------| | Mainstream Support | Ended July 9, 2013 | | Extended Support | Ended July 14, 2020 | | Security updates | No new patches unless critical (via Microsoft Update) | | Recommended action | Maintain existing solutions; do not start new projects with VSTO 2010 runtime. |

Traditionally, installing an Excel add-in required Admin rights and MSI installers. VSTO 2010 leveraged technology to allow "shadow copying." visual studio 2010 tools for office runtime