dotnet / dotnet/AspNetCore.Docs

When is IClaimsTransformation called?

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aspnet-core/svc security/subsvc Source - Docs.ms
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Description

### Description

It's not clear when `IClaimsTransformation.TransformAsync` gets called.

Does this happen always or only after authentication handler execution or [only after successful authentication](https://github.com/dotnet/aspnetcore/blob/3f1acb59718cadf111a0a796681e3d3509bb3381/src/Http/Authentication.Core/src/AuthenticationService.cs#L92) ;-)?

### Page URL

https://learn.microsoft.com/en-us/aspnet/core/security/authentication/claims?view=aspnetcore-8.0

### Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/security/authentication/claims.md

### Document ID

b01e1351-d362-fd61-4dcb-bacb21559f76

### Article author

@damienbod

[Related Issues](https://github.com/dotnet/AspNetCore.Docs/issues?q=is%3Aissue+is%3Aopen+b01e1351-d362-fd61-4dcb-bacb21559f76)

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