diff --git a/lib/components/qr-auth-handler.react.js b/lib/components/qr-auth-handler.react.js
--- a/lib/components/qr-auth-handler.react.js
+++ b/lib/components/qr-auth-handler.react.js
@@ -109,7 +109,14 @@
       ) {
         return;
       }
-      const qrCodeAuthMessage = await processMessage(aesKey, innerMessage);
+
+      let qrCodeAuthMessage;
+      try {
+        qrCodeAuthMessage = await processMessage(aesKey, innerMessage);
+      } catch (err) {
+        console.warn('Failed to decrypt Tunnelbroker QR auth message:', err);
+        return;
+      }
 
       if (
         qrCodeAuthMessage &&