diff --git a/apps/api/src/app/api/trpc/[trpc]/route.ts b/apps/api/src/app/api/trpc/[trpc]/route.ts
index 89838aab968..3e9d9d83bdb 100644
--- a/apps/api/src/app/api/trpc/[trpc]/route.ts
+++ b/apps/api/src/app/api/trpc/[trpc]/route.ts
@@ -11,6 +11,10 @@ const handler = (req: Request) =>
 		router: appRouter,
 		createContext,
 		onError: ({ path, error }) => {
+			// Suppress NOT_FOUND only for the known-dead device.heartbeat path
+			// (removed in #4490). Old desktop clients gated behind UpdateRequiredPage
+			// still call it; all other NOT_FOUND errors should remain visible.
+			if (error.code === "NOT_FOUND" && path === "device.heartbeat") return;
 			console.error(`❌ tRPC error on ${path ?? "<no-path>"}:`, error);
 		},
 	});