diff --git a/ui/src/components/layouts/Layouts.tsx b/ui/src/components/layouts/Layouts.tsx
index 702d1851..9a5bab4d 100644
--- a/ui/src/components/layouts/Layouts.tsx
+++ b/ui/src/components/layouts/Layouts.tsx
@@ -14,6 +14,7 @@ import useDirection from '@/utils/hooks/useDirection'
 import useLocale from '@/utils/hooks/useLocale'
 import { useDynamicRoutes } from '@/routes/dynamicRoutesContext'
 import { useLocation } from 'react-router-dom'
+import { hasSubdomain } from '@/utils/subdomain'
 
 export type LayoutType =
   | typeof LAYOUT_TYPE_CLASSIC
@@ -61,7 +62,7 @@ const Layout = () => {
   }, [routes, currentPath])
 
   const AppLayout = useMemo(() => {
-    if (authenticated && route?.routeType === 'protected') {
+    if ((authenticated && route?.routeType === 'protected') || hasSubdomain()) {
       return layouts[layoutType]
     }
 
diff --git a/ui/src/utils/subdomain.ts b/ui/src/utils/subdomain.ts
new file mode 100644
index 00000000..ce806164
--- /dev/null
+++ b/ui/src/utils/subdomain.ts
@@ -0,0 +1,24 @@
+const defaultSubDomain = 'KURS'
+
+export const getSubdomain = (): string | null => {
+  if (typeof window === 'undefined') return null
+
+  const hostname = window.location.hostname
+  const parts = hostname.split('.')
+
+  // localhost veya normal domain ise subdomain yok
+  if (hostname === 'localhost' || parts.length < 3) {
+    return null
+  }
+
+  // Default subdomain ise null döndür
+  if (parts[0].toUpperCase() === defaultSubDomain) {
+    return null
+  }
+
+  return parts[0].toUpperCase()
+}
+
+export const hasSubdomain = (): boolean => {
+  return getSubdomain() !== null
+}
diff --git a/ui/src/views/auth/Login.tsx b/ui/src/views/auth/Login.tsx
index cf711a0b..e319ed57 100644
--- a/ui/src/views/auth/Login.tsx
+++ b/ui/src/views/auth/Login.tsx
@@ -20,6 +20,7 @@ import { motion } from 'framer-motion'
 import { useEffect, useRef, useState } from 'react'
 import { useNavigate } from 'react-router-dom'
 import * as Yup from 'yup'
+import { getSubdomain } from '@/utils/subdomain'
 
 type SignInFormSchema = {
   userName: string
@@ -67,24 +68,6 @@ const Login = () => {
 
   const defaultSubDomain = 'KURS'
 
-  const getSubdomain = () => {
-    if (typeof window === 'undefined') return null
-
-    const hostname = window.location.hostname
-
-    const parts = hostname.split('.')
-
-    if (hostname === 'localhost' || parts.length < 3) {
-      return null
-    }
-
-    if (parts[0].toUpperCase() === defaultSubDomain) {
-      return null
-    }
-
-    return parts[0].toUpperCase()
-  }
-
   const onSignIn = async (
     values: SignInFormSchema,
     { setSubmitting, isSubmitting, setFieldValue, setFieldTouched }: any,