31 lines
1.4 KiB
Markdown
31 lines
1.4 KiB
Markdown
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## 138: Calling CreateDefaultAuthorizationContext with a null argument has changed
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### Scope
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Minor
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### Version Introduced
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4.6
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### Source Analyzer Status
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Available
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### Change Description
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The implementation of the AuthorizationContext returned by a call to the `CreateDefaultAuthorizationContext(IList<IAuthorizationPolicy>)` with a null authorizationPolicies argument has changed its implementation in the .NET Framework 4.6.
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- [x] Quirked
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- [ ] Build-time break
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### Recommended Action
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In rare cases, WCF apps that use custom authentication may see behavioral differences. In such cases, the previous behavior can be restored in either of two ways:
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1. Recompile your app to target an earlier version of the .NET Framework than 4.6. For IIS-hosted services, use the <httpRuntime targetFramework="x.x" /> element to target an earlier version of the .NET Framework.
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2. Add the following line to the `<appSettings>` section of your app.config file: `<add key="appContext.SetSwitch:Switch.System.IdentityModel.EnableCachedEmptyDefaultAuthorizationContext" value="true" />`
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### Affected APIs
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* `M:System.IdentityModel.Policy.AuthorizationContext.CreateDefaultAuthorizationContext(System.Collections.Generic.IList{System.IdentityModel.Policy.IAuthorizationPolicy})`
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### Category
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Windows Communication Foundation (WCF)
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[More information](https://msdn.microsoft.com/en-us/library/dn833123%28v=vs.110%29.aspx#WCF)
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