diff --git a/devfront/src/lib/apiClient.ts b/devfront/src/lib/apiClient.ts
index 49b83cee..5a28cc72 100644
--- a/devfront/src/lib/apiClient.ts
+++ b/devfront/src/lib/apiClient.ts
@@ -27,17 +27,23 @@ apiClient.interceptors.request.use(async (config) => {
 apiClient.interceptors.response.use(
   (response) => response,
   async (error) => {
-    if (error.response?.status === 401) {
-      // 401 발생 시 로그인 페이지로 리다이렉트
-      const isAuthPath = window.location.pathname.startsWith("/auth/callback");
-      const isLoginPath = window.location.pathname === "/login";
-      const user = await userManager.getUser();
-      // 인증 토큰이 없는 경우에만 로그인으로 보낸다.
-      // 토큰이 있는데 401이면 권한/백엔드 정책 이슈로 간주하고 화면에서 에러를 노출한다.
-      const hasAccessToken = Boolean(user?.access_token);
-      if (!hasAccessToken && !isAuthPath && !isLoginPath) {
-        window.location.href = "/login";
-      }
+    const status = error.response?.status;
+    const message =
+      error.response?.data?.error?.toString().toLowerCase() ??
+      error.response?.data?.message?.toString().toLowerCase() ??
+      "";
+    const isAuthPath = window.location.pathname.startsWith("/auth/callback");
+    const isLoginPath = window.location.pathname === "/login";
+    const shouldRedirectToLogin =
+      status === 401 ||
+      (status === 403 &&
+        (message.includes("authentication required") ||
+          message.includes("invalid session") ||
+          message.includes("token is not active")));
+
+    if (shouldRedirectToLogin && !isAuthPath && !isLoginPath) {
+      await userManager.removeUser();
+      window.location.href = "/login";
     }
     return Promise.reject(error);
   },