dotnet/Documentation/compatibility/system_activities-is-now-aptca.md

System.Activities is now APTCA

Scope

Edge

Version Introduced

4.5

Source Analyzer Status

Available

Change Description

The assembly is marked with the xref:System.Security.AllowPartiallyTrustedCallersAttribute?displayProperty=name attribute.

• Quirked
• Build-time break

Recommended Action

Derived classes cannot be marked with the xref:System.Security.SecurityCriticalAttribute?displayProperty=name. Previously, derived types had to be marked with the xref:System.Security.SecurityCriticalAttribute?displayProperty=name. However, this change should have no real impact.

Affected APIs

• Not detectable via API analysis

Category

Windows Workflow Foundation (WF)