diff --git a/ui/vite.config.ts b/ui/vite.config.ts
index 11dc4edd..a888a98b 100644
--- a/ui/vite.config.ts
+++ b/ui/vite.config.ts
@@ -3,16 +3,18 @@ import react from '@vitejs/plugin-react'
 import path from 'path'
 import dynamicImport from 'vite-plugin-dynamic-import'
 import { VitePWA } from 'vite-plugin-pwa'
-import { fetchTenantNames } from './src/services/tenants'
+// import { fetchTenantNames } from './src/services/tenants'
 
 export default defineConfig(async ({ mode }) => {
   const env = loadEnv(mode, process.cwd(), '')
   const apiUrl = env.VITE_API_URL
   const baseDomains = ['sozsoft.com', 'dev.sozsoft.com']
-  const tenantNames = (await fetchTenantNames(apiUrl)).map((n) => n.trim().toLowerCase())
-  const tenantHosts = tenantNames.map((t) => `${t}.sozsoft.com`)
-  const allowedHosts = Array.from(new Set(['localhost', ...baseDomains, ...tenantHosts]))
 
+  // const tenantNames = (await fetchTenantNames(apiUrl)).map((n) => n.trim().toLowerCase())
+  // const tenantHosts = tenantNames.map((t) => `${t}.sozsoft.com`)
+  const tenantHosts: string[] = []
+
+  const allowedHosts = Array.from(new Set(['localhost', ...baseDomains, ...tenantHosts]))
   console.log('[vite] allowedHosts:', allowedHosts)
 
   return {
@@ -24,11 +26,28 @@ export default defineConfig(async ({ mode }) => {
       }),
       dynamicImport(),
       VitePWA({
+        // Deploy'dan sonra otomatik güncelle
         registerType: 'autoUpdate',
-        devOptions: { enabled: true },
+        // Kayıt kodunu otomatik enjekte et (virtual:pwa-register yazmadan da çalışır)
+        injectRegister: 'auto',
+        // Dev ortamında SW'yi aç, prod'da kapalı tut (build edilmiş SW prod'da zaten aktif olur)
+        devOptions: { enabled: mode !== 'production' },
+
         workbox: {
+          // Büyük asset'leri de cache'leyebil
           maximumFileSizeToCacheInBytes: 10 * 1024 * 1024,
+
+          // EN KRİTİK: yeni SW beklemeden kontrolü alsın
+          clientsClaim: true,
+          skipWaiting: true,
+
+          // Eski workbox cache'lerini temizle
+          cleanupOutdatedCaches: true,
+
+          // SPA fallback'i API çağrılarına uygulama
+          navigateFallbackDenylist: [/^\/api\//],
         },
+
         manifest: {
           name: 'Platform',
           theme_color: '#FF99C8',
@@ -45,11 +64,14 @@ export default defineConfig(async ({ mode }) => {
         },
       }),
     ],
+
     server: {
       open: true,
       port: 3000,
     },
+
     assetsInclude: ['**/*.md'],
+
     resolve: {
       alias: {
         '@': path.join(__dirname, 'src'),
@@ -57,16 +79,20 @@ export default defineConfig(async ({ mode }) => {
         'devextreme/ui': 'devextreme/esm/ui',
       },
     },
+
     build: {
       outDir: 'dist',
       sourcemap: false,
     },
+
     preview: {
       host: '0.0.0.0',
       port: 80,
       open: false,
-      allowedHosts: ['localhost', '.sozsoft.com'],
+      // Hesaplanan allowedHosts'u kullan
+      allowedHosts,
     },
+
     define: {
       'process.env': {},
     },