diff --git a/apps/desktop/desktop_native/macos_provider/src/registration.rs b/apps/desktop/desktop_native/macos_provider/src/registration.rs
index 9e697b75c16..c961566a86c 100644
--- a/apps/desktop/desktop_native/macos_provider/src/registration.rs
+++ b/apps/desktop/desktop_native/macos_provider/src/registration.rs
@@ -14,6 +14,7 @@ pub struct PasskeyRegistrationRequest {
     user_verification: UserVerification,
     supported_algorithms: Vec<i32>,
     window_xy: Position,
+    excluded_credentials: Vec<Vec<u8>>,
 }
 
 #[derive(uniffi::Record, Serialize, Deserialize)]
diff --git a/apps/desktop/desktop_native/napi/index.d.ts b/apps/desktop/desktop_native/napi/index.d.ts
index 0d26be18bdb..e7740b67822 100644
--- a/apps/desktop/desktop_native/napi/index.d.ts
+++ b/apps/desktop/desktop_native/napi/index.d.ts
@@ -130,6 +130,7 @@ export declare namespace autofill {
     userVerification: UserVerification
     supportedAlgorithms: Array<number>
     windowXy: Position
+    excludedCredentials: Array<Array<number>>
   }
   export interface PasskeyRegistrationResponse {
     rpId: string
diff --git a/apps/desktop/desktop_native/napi/src/lib.rs b/apps/desktop/desktop_native/napi/src/lib.rs
index 28eaa61df17..a40a3b58f42 100644
--- a/apps/desktop/desktop_native/napi/src/lib.rs
+++ b/apps/desktop/desktop_native/napi/src/lib.rs
@@ -534,6 +534,7 @@ pub mod autofill {
         pub user_verification: UserVerification,
         pub supported_algorithms: Vec<i32>,
         pub window_xy: Position,
+        pub excluded_credentials: Vec<Vec<u8>>,
     }
 
     #[napi(object)]
diff --git a/apps/desktop/macos/autofill-extension/CredentialProviderViewController.swift b/apps/desktop/macos/autofill-extension/CredentialProviderViewController.swift
index 0e6c0fc7023..5befed88563 100644
--- a/apps/desktop/macos/autofill-extension/CredentialProviderViewController.swift
+++ b/apps/desktop/macos/autofill-extension/CredentialProviderViewController.swift
@@ -299,6 +299,14 @@ class CredentialProviderViewController: ASCredentialProviderViewController {
                     UserVerification.discouraged
                 }
                 
+                // Convert excluded credentials to an array of credential IDs
+                var excludedCredentialIds: [Data] = []
+                if #available(macOSApplicationExtension 15.0, *) {
+                    if let excludedCreds = request.excludedCredentials {
+                        excludedCredentialIds = excludedCreds.map { $0.credentialID }
+                    }
+                }
+                
                 let req = PasskeyRegistrationRequest(
                     rpId: passkeyIdentity.relyingPartyIdentifier,
                     userName: passkeyIdentity.userName,
@@ -306,7 +314,8 @@ class CredentialProviderViewController: ASCredentialProviderViewController {
                     clientDataHash: request.clientDataHash,
                     userVerification: userVerification,
                     supportedAlgorithms: request.supportedAlgorithms.map{ Int32($0.rawValue) },
-                    windowXy: self.getWindowPosition()
+                    windowXy: self.getWindowPosition(),
+                    excludedCredentials: excludedCredentialIds
                 )
                 logger.log("[autofill-extension] prepareInterface(passkey) calling preparePasskeyRegistration")                
                 
diff --git a/apps/desktop/src/autofill/services/desktop-autofill.service.ts b/apps/desktop/src/autofill/services/desktop-autofill.service.ts
index b72c6974c97..7fcc3425082 100644
--- a/apps/desktop/src/autofill/services/desktop-autofill.service.ts
+++ b/apps/desktop/src/autofill/services/desktop-autofill.service.ts
@@ -289,7 +289,10 @@ export class DesktopAutofillService implements OnDestroy {
         alg,
         type: "public-key",
       })),
-      excludeCredentialDescriptorList: [],
+      excludeCredentialDescriptorList: request.excludedCredentials.map((credentialId) => ({
+        id: new Uint8Array(credentialId),
+        type: "public-key" as const,
+      })),
       requireResidentKey: true,
       requireUserVerification:
         request.userVerification === "required" || request.userVerification === "preferred",