diff --git a/apps/cs/src/entities/auth/api/auth-service.ts b/apps/cs/src/entities/auth/api/auth-service.ts
index cf7281ff9..93c0bc0bb 100644
--- a/apps/cs/src/entities/auth/api/auth-service.ts
+++ b/apps/cs/src/entities/auth/api/auth-service.ts
@@ -4,35 +4,15 @@ import {
   CLAIM_NAME,
   ENDPOINT,
 } from "@/shared/config";
-import {
-  type AuthPayload,
-  type AuthService,
-  getRemainingMs,
-} from "@common/auth";
+import { type AuthPayload, type AuthService } from "@common/auth";
 
 import { clearDeviceId, getOrCreateDeviceId } from "../lib/device-id";
 import {
   clearRefreshTimer,
   setToken,
-  setupRefreshTimer,
   tokenManager,
 } from "../lib/token-manager";
 
-function resolveLoginError(message: string | undefined): string {
-  switch (message) {
-    case "Invalid Credentials":
-      return "아이디와 비밀번호가 일치하지 않습니다.";
-    case "User not found":
-      return "존재하지 않는 아이디입니다.";
-    case "User is not active":
-      return "활성화되지 않은 계정입니다.";
-    case "User is not verified":
-      return "이메일 인증이 필요합니다.";
-    default:
-      return message ?? "로그인에 실패했습니다.";
-  }
-}
-
 async function login(payload: AuthPayload): Promise<void> {
   const response = await fetch(`/api/proxy${ENDPOINT.USER_SERVICE.LOGIN}`, {
     method: "POST",
@@ -45,12 +25,8 @@ async function login(payload: AuthPayload): Promise<void> {
 
   const data = await response.json();
 
-  if (!response.ok) {
-    throw new Error(resolveLoginError(data?.message));
-  }
-
-  const accessToken = data[ACCESS_TOKEN] as string | undefined;
-  const tokenId = data[AUTH_USER_ID] as string | undefined;
+  const accessToken = data[ACCESS_TOKEN];
+  const tokenId = data[AUTH_USER_ID];
 
   if (!accessToken || !tokenId) {
     throw new Error("인증 토큰을 받지 못했습니다.");
@@ -59,10 +35,10 @@ async function login(payload: AuthPayload): Promise<void> {
   setToken(CLAIM_NAME, accessToken);
   setToken(AUTH_USER_ID, tokenId);
 
-  const remainingMs = getRemainingMs(accessToken);
-  if (remainingMs > 0) {
-    setupRefreshTimer(silentRefresh, remainingMs);
-  }
+  // const remainingMs = getRemainingMs(accessToken);
+  // if (remainingMs > 0) {
+  //   setupRefreshTimer(silentRefresh, remainingMs);
+  // }
 }
 
 async function silentRefresh(): Promise<void> {
@@ -84,8 +60,8 @@ async function silentRefresh(): Promise<void> {
       throw new Error(data?.message ?? "토큰 갱신에 실패했습니다.");
     }
 
-    const accessToken = data[ACCESS_TOKEN] as string | undefined;
-    const tokenId = data[AUTH_USER_ID] as string | undefined;
+    const accessToken = data[ACCESS_TOKEN];
+    const tokenId = data[AUTH_USER_ID];
 
     if (!accessToken || !tokenId) {
       throw new Error("갱신된 인증 토큰을 받지 못했습니다.");
@@ -94,10 +70,10 @@ async function silentRefresh(): Promise<void> {
     setToken(CLAIM_NAME, accessToken);
     setToken(AUTH_USER_ID, tokenId);
 
-    const remainingMs = getRemainingMs(accessToken);
-    if (remainingMs > 0) {
-      setupRefreshTimer(silentRefresh, remainingMs);
-    }
+    // const remainingMs = getRemainingMs(accessToken);
+    // if (remainingMs > 0) {
+    //   setupRefreshTimer(silentRefresh, remainingMs);
+    // }
   } catch (error) {
     console.error(
       `[silentRefresh] Failed at ${new Date().toISOString()}`,