diff --git a/api/v1/system.go b/api/v1/system.go
index adbb438e..4d9c6f38 100644
--- a/api/v1/system.go
+++ b/api/v1/system.go
@@ -72,26 +72,17 @@ func (s *APIV1Service) GetSystemStatus(c echo.Context) error {
 	ctx := c.Request().Context()
 
 	systemStatus := SystemStatus{
-		Profile:              *s.Profile,
-		DBSize:               0,
-		AllowSignUp:          false,
-		DisablePasswordLogin: false,
-		DisablePublicMemos:   false,
-		MaxUploadSizeMiB:     32,
-		AutoBackupInterval:   0,
-		AdditionalStyle:      "",
-		AdditionalScript:     "",
+		Profile: *s.Profile,
+		// Allow sign up by default.
+		AllowSignUp:      true,
+		MaxUploadSizeMiB: 32,
 		CustomizedProfile: CustomizedProfile{
-			Name:        "memos",
-			LogoURL:     "",
-			Description: "",
-			Locale:      "en",
-			Appearance:  "system",
-			ExternalURL: "",
+			Name:       "memos",
+			Locale:     "en",
+			Appearance: "system",
 		},
-		StorageServiceID:         DefaultStorage,
-		LocalStoragePath:         "assets/{timestamp}_{filename}",
-		MemoDisplayWithUpdatedTs: false,
+		StorageServiceID: DefaultStorage,
+		LocalStoragePath: "assets/{timestamp}_{filename}",
 	}
 
 	hostUserType := store.RoleHost
diff --git a/web/src/App.tsx b/web/src/App.tsx
index bb697563..1a0fe56e 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -4,6 +4,7 @@ import { useTranslation } from "react-i18next";
 import { Outlet } from "react-router-dom";
 import storage from "./helpers/storage";
 import { getSystemColorScheme } from "./helpers/utils";
+import useNavigateTo from "./hooks/useNavigateTo";
 import Loading from "./pages/Loading";
 import store from "./store";
 import { useGlobalStore } from "./store/module";
@@ -11,12 +12,20 @@ import { useUserV1Store } from "./store/v1";
 
 const App = () => {
   const { i18n } = useTranslation();
+  const navigateTo = useNavigateTo();
   const globalStore = useGlobalStore();
   const { mode, setMode } = useColorScheme();
   const userV1Store = useUserV1Store();
   const [loading, setLoading] = useState(true);
   const { appearance, locale, systemStatus } = globalStore.state;
 
+  // Redirect to sign up page if no host.
+  useEffect(() => {
+    if (!systemStatus.host) {
+      navigateTo("/auth/signup");
+    }
+  }, [systemStatus.host]);
+
   useEffect(() => {
     const initialState = async () => {
       const { user } = store.getState().user;