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calls-to-claimsidentity-constructors.md

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Calls to ClaimsIdentity constructors

Scope

Edge

Version Introduced

4.6.2

Source Analyzer Status

Investigating

Change Description

Starting with the .NET Framework 4.6.2, there is a change in how xref:System.Security.Claims.ClaimsIdentity constructors with an xref:System.Security.Principal.IIdentity?displayProperty=name parameter set the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property. If the xref:System.Security.Principal.IIdentity?displayProperty=name argument is a xref:System.Security.Claims.ClaimsIdentity object, and the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property of that xref:System.Security.Claims.ClaimsIdentity object is not null, the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property is attached by using the xref:System.Security.Claims.ClaimsIdentity.Clone method. In the Framework 4.6.1 and earlier versions, the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property is attached as an existing reference.

Because of this change, starting with the .NET Framework 4.6.2, the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property of the new xref:System.Security.Claims.ClaimsIdentity object is not equal to the xref:System.Security.Claims.ClaimsIdentity.Actor?displayProperty=name property of the constructor's xref:System.Security.Principal.IIdentity?displayProperty=name argument. In the .NET Framework 4.6.1 and earlier versions, it is equal.

  • Quirked
  • Build-time break

Recommended Action

If this behavior is undesirable, you can restore the previous behavior by setting the Switch.System.Security.ClaimsIdentity.SetActorAsReferenceWhenCopyingClaimsIdentity switch in your application configuration file to true. This requires that you add the following to the <runtime> section of your web.config file:

<configuration>
   <runtime>
      <AppContextSwitchOverrides value="Switch.System.Security.ClaimsIdentity.SetActorAsReferenceWhenCopyingClaimsIdentity=true" />
   </runtime>
</configuration>

Affected APIs

  • M:System.Security.Claims.ClaimsIdentity.#ctor(System.Security.Principal.IIdentity)
  • M:System.Security.Claims.ClaimsIdentity.#ctor(System.Security.Principal.IIdentity,System.Collections.Generic.IEnumerable{System.Security.Claims.Claim})
  • M:System.Security.Claims.ClaimsIdentity.#ctor(System.Security.Principal.IIdentity,System.Collections.Generic.IEnumerable{System.Security.Claims.Claim},System.String,System.String,System.String)

Category

Core