diff --git a/apps/admin/src/plugins/1.router/additional-routes.ts b/apps/admin/src/plugins/1.router/additional-routes.ts
index 8127d5f3..7d72c5c0 100644
--- a/apps/admin/src/plugins/1.router/additional-routes.ts
+++ b/apps/admin/src/plugins/1.router/additional-routes.ts
@@ -11,7 +11,15 @@ export const redirects: RouteRecordRaw[] = [
     path: '/',
     name: 'index',
     redirect: to => {
-      const authStore = useAuthStore()
+      // This redirect fires during router.install(), which runs before
+      // Pinia is registered (1.router < 2.pinia). Guard against that.
+      let authStore
+      try {
+        authStore = useAuthStore()
+      }
+      catch {
+        return { name: 'login', query: to.query }
+      }
 
       if (!authStore.isAuthenticated)
         return { name: 'login', query: to.query }
diff --git a/apps/admin/src/plugins/1.router/guards.ts b/apps/admin/src/plugins/1.router/guards.ts
index c74f1cb3..bfec9afb 100644
--- a/apps/admin/src/plugins/1.router/guards.ts
+++ b/apps/admin/src/plugins/1.router/guards.ts
@@ -6,7 +6,15 @@ export const setupGuards = (
   router: _RouterTyped<RouteNamedMap & { [key: string]: any }>
 ) => {
   router.beforeEach(async (to, from) => {
-    const authStore = useAuthStore();
+    // Guard fires during router.install() before Pinia is registered
+    // (1.router loads before 2.pinia). Skip auth checks on that first call.
+    let authStore;
+    try {
+      authStore = useAuthStore();
+    }
+    catch {
+      return;
+    }
 
     // Wait for initialization to complete (only blocks on first navigation)
     if (!authStore.isInitialized) {