diff --git a/apps/cs/app/api/auth/logout/route.ts b/apps/cs/app/api/auth/logout/route.ts
index fdcc9df7c..9ec9605ce 100644
--- a/apps/cs/app/api/auth/logout/route.ts
+++ b/apps/cs/app/api/auth/logout/route.ts
@@ -4,14 +4,20 @@ import {
   ACCESS_TOKEN,
   AUTH_USER_ID,
   CLAIM_NAME,
+  COOKIE_DOMAIN,
   REFRESH_TOKEN,
 } from "@/shared/config";
 
+const cookieOptions = {
+  path: "/",
+  domain: COOKIE_DOMAIN,
+};
+
 export async function POST() {
   const cookieStore = await cookies();
-  cookieStore.delete(ACCESS_TOKEN);
-  cookieStore.delete(REFRESH_TOKEN);
-  cookieStore.delete(AUTH_USER_ID);
-  cookieStore.delete(CLAIM_NAME);
+  cookieStore.delete({ name: ACCESS_TOKEN, ...cookieOptions });
+  cookieStore.delete({ name: REFRESH_TOKEN, ...cookieOptions });
+  cookieStore.delete({ name: AUTH_USER_ID, ...cookieOptions });
+  cookieStore.delete({ name: CLAIM_NAME, ...cookieOptions });
   return NextResponse.json({ message: "Logged out" }, { status: 200 });
 }
diff --git a/packages/common/auth/token-manager.ts b/packages/common/auth/token-manager.ts
index ff516aa16..1ee5bad68 100644
--- a/packages/common/auth/token-manager.ts
+++ b/packages/common/auth/token-manager.ts
@@ -9,10 +9,7 @@ export function createTokenManager(config: AuthConfig) {
 
     if (config.cookieDomain) return config.cookieDomain;
 
-    const { hostname } = window.location;
-    if (hostname === "localhost" || hostname === "127.0.0.1") return undefined;
-
-    return hostname;
+    return undefined;
   };
 
   return {
@@ -65,7 +62,9 @@ export function createTokenManager(config: AuthConfig) {
     },
 
     getRefreshToken(): string | undefined {
-      return config.refreshToken ? this.getToken(config.refreshToken) : undefined;
+      return config.refreshToken
+        ? this.getToken(config.refreshToken)
+        : undefined;
     },
 
     getUserId(): string | undefined {
diff --git a/packages/common/components/src/ui/header/index.tsx b/packages/common/components/src/ui/header/index.tsx
index 69e2a7196..49c080e5c 100644
--- a/packages/common/components/src/ui/header/index.tsx
+++ b/packages/common/components/src/ui/header/index.tsx
@@ -82,13 +82,13 @@ export function Header({ viewOnly }: { viewOnly?: boolean }) {
       // 에러가 나도 계속 진행
     } finally {
       // 2. 클라이언트 쿠키 삭제 (백업)
-      clearClientCookies();
+      // clearClientCookies();
 
       // 3. 로컬/세션 스토리지 정리
-      if (typeof window !== "undefined") {
-        localStorage.clear();
-        sessionStorage.clear();
-      }
+      // if (typeof window !== "undefined") {
+      //   localStorage.clear();
+      //   sessionStorage.clear();
+      // }
 
       // 4. 로그인 페이지로 리다이렉트
       window.location.href = "/auth/login";
@@ -96,6 +96,7 @@ export function Header({ viewOnly }: { viewOnly?: boolean }) {
   };
 
   // 쿠키 삭제 헬퍼 함수
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
   const clearClientCookies = () => {
     const actualHost = window.location.hostname;