Disable CAS policy ( <NetFx40_LegacySecurityPolicy enabled="false"/> ) and use strong-named assemblies with certificate signing.
| Office Version | VSTO 2010 Runtime Support | Notes | |----------------|---------------------------|-------| | Office 2010 | ✅ Fully supported | Native target. | | Office 2013 | ✅ Supported | Requires update KB2764594. | | Office 2016 | ⚠️ Limited support | Works but not officially tested; may require registry tweaks. | | Office 2019/365| ❌ Not recommended | Use VSTO 2015 runtime or Office Add-in (Web) technology. | | Office 2007 | ✅ Supported (SP2+) | Requires .NET Framework 3.5 SP1. |
Technical Overview, Architecture, Lifecycle, and Deployment Date: October 2023 Target Audience: Developers, System Administrators, IT Security Teams
| Component | Release Date | Mainstream Support End | Extended Support End | Current Status | | :--- | :--- | :--- | :--- | :--- | | | June 2010 | July 2015 | July 2020 | Ended | | Visual Studio 2010 | June 2010 | July 2015 | July 2020 | Ended | | Office 2010 | June 2010 | Oct 2015 | Oct 2020 | Ended |
