diff --git a/src/auth/index.js b/src/auth/index.js
index 714fe5d..5bf7bc3 100644
--- a/src/auth/index.js
+++ b/src/auth/index.js
@@ -15,6 +15,11 @@ import {useDispatch} from "react-redux";
 import { REFRESH_TOKEN } from 'utils/ApiPathConst';
 import { getMessage } from 'utils/getI18nMessage';
 
+// Guard so we only register interceptors once (ThemeRoutes re-renders add duplicate handlers otherwise)
+let axiosInterceptorsSetup = false;
+// In-memory guard so only one 401/logout flow shows the alert (avoids race when multiple 401s or interceptors run)
+let expiredAlertShownInMemory = false;
+
 // ** Handle User Login
 export const handleLogin = data => {
     return dispatch => {
@@ -95,7 +100,8 @@ export const handleLogoutFunction = () => {
         localStorage.removeItem('transactionid')
         localStorage.removeItem('searchCriteria')
         //localStorage.removeItem(config.storageUserRoleKeyName)
-        localStorage.removeItem('expiredAlertShown')
+        localStorage.removeItem('expiredAlertShown');
+        expiredAlertShownInMemory = false;
         localStorage.removeItem(refreshIntervalName)
         localStorage.removeItem(windowCount)
         localStorage.removeItem(predictProductionQty)
@@ -110,7 +116,13 @@ export const SetupAxiosInterceptors = () => {
     const dispatch = useDispatch();
     //const updateLastRequestTime = useContext(TimerContext);
     let isRefreshToken= false;
-    
+
+    // Avoid stacking interceptors on every ThemeRoutes re-render (would cause multiple alerts on 401)
+    if (axiosInterceptorsSetup) {
+        return;
+    }
+    axiosInterceptorsSetup = true;
+
     axios.interceptors.request.use(
         config => {
             // ** Get token from localStorage
@@ -158,7 +170,8 @@ export const SetupAxiosInterceptors = () => {
                     })
                     .catch((refreshError) => {
                       isRefreshToken = false;
-                      if (localStorage.getItem("expiredAlertShown") === null) {
+                      if (!expiredAlertShownInMemory && localStorage.getItem("expiredAlertShown") === null) {
+                        expiredAlertShownInMemory = true;
                         localStorage.setItem("expiredAlertShown", "true");
                         alert(getMessage("autoLogout"));
                       }
@@ -168,10 +181,11 @@ export const SetupAxiosInterceptors = () => {
                       throw refreshError;
                     });
             } else {
-                if (error.response.status === 401) {
-                    if (localStorage.getItem("expiredAlertShown") === null) {
-                        localStorage.setItem("expiredAlertShown", true)
-                        alert(getMessage("autoLogout"))
+                if (error.response && error.response.status === 401) {
+                    if (!expiredAlertShownInMemory && localStorage.getItem("expiredAlertShown") === null) {
+                        expiredAlertShownInMemory = true;
+                        localStorage.setItem("expiredAlertShown", "true");
+                        alert(getMessage("autoLogout"));
                     }
                 }
     
diff --git a/src/components/AutoLogoutProvider.js b/src/components/AutoLogoutProvider.js
index a7b9744..124de6f 100644
--- a/src/components/AutoLogoutProvider.js
+++ b/src/components/AutoLogoutProvider.js
@@ -98,7 +98,11 @@ const AutoLogoutProvider = ({ children }) => {
                 if (timeElapsed >= logoutInterval * 60 * 1000) {
                     if (isUserLoggedIn() && !idleLogoutTriggeredRef.current) {
                         idleLogoutTriggeredRef.current = true;
-                        alert(intl.formatMessage({ id: "autoLogout" }));
+                        // Skip alert if token-expiry (axios 401) already showed one, to avoid duplicate alerts
+                        if (localStorage.getItem("expiredAlertShown") === null) {
+                            localStorage.setItem("expiredAlertShown", "true");
+                            alert(intl.formatMessage({ id: "autoLogout" }));
+                        }
                         dispatch(handleLogoutFunction());
                         navigate('/login');
                         window.location.reload();