diff --git a/dashboard/frontend/src/routes/Settings.svelte b/dashboard/frontend/src/routes/Settings.svelte
index c3ec770..3cbf7fa 100644
--- a/dashboard/frontend/src/routes/Settings.svelte
+++ b/dashboard/frontend/src/routes/Settings.svelte
@@ -68,7 +68,9 @@
       await loadPasskeys();
     } catch (e) {
       console.error("Passkey registration error:", e);
-      passkeyErr = e.body?.detail || e.message || "Failed to register passkey";
+      const errorMsg = e.body?.detail || e.message || "Failed to register passkey";
+      passkeyErr = errorMsg;
+      alert("Passkey Error: " + errorMsg + "\n\nFull error: " + JSON.stringify(e, null, 2));
     } finally {
       passkeyLoading = false;
     }