<PackageReference Include="Microsoft.Identity.Client" Version="4.83.1" />

Microsoft.Identity.Client.ManagedIdentityPopExtensions

public static class ManagedIdentityPopExtensions
Extension methods for enabling mTLS Proof-of-Possession in managed identity flows.

Enables mTLS Proof-of-Possession for managed identity token acquisition. When attestation is required (KeyGuard scenarios), use the Msal.KeyAttestation package and call .WithAttestationSupport() after this method.