diff --git a/lib/components/secondary-device-qr-auth-context-provider.react.js b/lib/components/secondary-device-qr-auth-context-provider.react.js
--- a/lib/components/secondary-device-qr-auth-context-provider.react.js
+++ b/lib/components/secondary-device-qr-auth-context-provider.react.js
@@ -22,6 +22,7 @@
   type QRAuthBackupData,
 } from '../types/tunnelbroker/qr-code-auth-message-types.js';
 import { getContentSigningKey } from '../utils/crypto-utils.js';
+import { getMessageForException } from '../utils/errors.js';
 
 type Props = {
   +children: React.Node,
@@ -72,6 +73,7 @@
     removeListener,
     socketState,
     sendMessageToDevice,
+    confirmMessageToTunnelbroker,
   } = useTunnelbroker();
 
   const identityContext = React.useContext(IdentityClientContext);
@@ -185,6 +187,15 @@
         qrCodeAuthMessage;
       setPrimaryDeviceID(receivedPrimaryDeviceID);
 
+      try {
+        await confirmMessageToTunnelbroker(message.messageID);
+      } catch (e) {
+        console.error(
+          'Error while confirming DEVICE_LIST_UPDATE_SUCCESS',
+          getMessageForException(e),
+        );
+      }
+
       await performLogIn(userID);
       setUnauthorizedDeviceID(null);
     },
@@ -195,6 +206,7 @@
       performLogIn,
       setUnauthorizedDeviceID,
       parseTunnelbrokerQRAuthMessage,
+      confirmMessageToTunnelbroker,
     ],
   );
 
diff --git a/lib/tunnelbroker/tunnelbroker-context.js b/lib/tunnelbroker/tunnelbroker-context.js
--- a/lib/tunnelbroker/tunnelbroker-context.js
+++ b/lib/tunnelbroker/tunnelbroker-context.js
@@ -19,6 +19,7 @@
 } from '../shared/timeouts.js';
 import { isWebPlatform } from '../types/device-types.js';
 import type { MessageSentStatus } from '../types/tunnelbroker/device-to-tunnelbroker-request-status-types.js';
+import type { MessageReceiveConfirmation } from '../types/tunnelbroker/message-receive-confirmation-types.js';
 import type { MessageToDeviceRequest } from '../types/tunnelbroker/message-to-device-request-types.js';
 import type { MessageToTunnelbrokerRequest } from '../types/tunnelbroker/message-to-tunnelbroker-request-types.js';
 import {
@@ -77,6 +78,7 @@
   +removeListener: (listener: TunnelbrokerSocketListener) => void,
   +socketState: TunnelbrokerSocketState,
   +setUnauthorizedDeviceID: (unauthorizedDeviceID: ?string) => void,
+  +confirmMessageToTunnelbroker: (messageID: string) => void,
 };
 
 const TunnelbrokerContext: React.Context<?TunnelbrokerContextType> =
@@ -482,6 +484,17 @@
     socket.current?.send(message);
   }, []);
 
+  const confirmMessageToTunnelbroker = React.useCallback(
+    (messageID: string) => {
+      const confirmation: MessageReceiveConfirmation = {
+        type: deviceToTunnelbrokerMessageTypes.MESSAGE_RECEIVE_CONFIRMATION,
+        messageIDs: [messageID],
+      };
+      socket.current?.send(JSON.stringify(confirmation));
+    },
+    [],
+  );
+
   const value: TunnelbrokerContextType = React.useMemo(
     () => ({
       sendMessageToDevice,
@@ -491,6 +504,7 @@
       addListener,
       removeListener,
       setUnauthorizedDeviceID,
+      confirmMessageToTunnelbroker,
     }),
     [
       sendMessageToDevice,
@@ -499,6 +513,7 @@
       socketState,
       addListener,
       removeListener,
+      confirmMessageToTunnelbroker,
     ],
   );