Vsto 2010 Runtime Free
Disable CAS policy ( <NetFx40_LegacySecurityPolicy enabled="false"/> ) and use strong-named assemblies with certificate signing.
<deployment install="true" mapFileExtensions="true" /> <application> <assemblyIdentity name="MyAddIn.dll" version="1.0.0.0" /> </application> vsto 2010 runtime
VSTO 2010 introduced complex deployment requirements compared to VBA: Disable CAS policy ( <