diff --git a/projects/ucap-webmessenger-app/src/app/pages/messenger/components/main.page.component.ts b/projects/ucap-webmessenger-app/src/app/pages/messenger/components/main.page.component.ts
index 56a8e74e..3dc18c0e 100644
--- a/projects/ucap-webmessenger-app/src/app/pages/messenger/components/main.page.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/pages/messenger/components/main.page.component.ts
@@ -1,4 +1,11 @@
-import { map, tap, take, catchError, debounce } from 'rxjs/operators';
+import {
+  map,
+  tap,
+  take,
+  catchError,
+  debounce,
+  withLatestFrom
+} from 'rxjs/operators';
 import {
   Component,
   OnInit,
@@ -18,30 +25,15 @@ import * as EventStore from '@app/store/messenger/event';
 import * as MessageStore from '@app/store/messenger/message';
 import * as StatusStore from '@app/store/messenger/status';
 import * as SettingsStore from '@app/store/messenger/settings';
-import {
-  Observable,
-  Subscription,
-  of,
-  timer,
-  EMPTY,
-  combineLatest
-} from 'rxjs';
-import {
-  UCAP_NATIVE_SERVICE,
-  NativeService,
-  WindowState
-} from '@ucap-webmessenger/native';
+import { Observable, Subscription, of, timer, EMPTY } from 'rxjs';
+import { UCAP_NATIVE_SERVICE, NativeService } from '@ucap-webmessenger/native';
 
-import { StatusProtocolService } from '@ucap-webmessenger/protocol-status';
 import { StatusType, StatusCode } from '@ucap-webmessenger/core';
 import {
   DialogService,
-  ConfirmDialogComponent,
-  ConfirmDialogResult,
   AlertDialogComponent,
   AlertDialogResult,
-  AlertDialogData,
-  ConfirmDialogData
+  AlertDialogData
 } from '@ucap-webmessenger/ui';
 import {
   ProfileDialogComponent,
@@ -110,7 +102,6 @@ export class MainPageComponent implements OnInit, OnDestroy {
     @Inject(UCAP_NATIVE_SERVICE) private nativeService: NativeService,
     private store: Store<any>,
     private ngZone: NgZone,
-    private statusProtocolService: StatusProtocolService,
     private daesangProtocolService: DaesangProtocolService,
     private conferenceService: ConferenceService,
     private callService: CallService,
@@ -168,17 +159,20 @@ export class MainPageComponent implements OnInit, OnDestroy {
       })
     );
 
-    this.windowFocusChangedSubscription = combineLatest([
-      this.nativeService.windowFocusChanged(),
-      this.store.pipe(select(AppStore.MessengerSelector.RoomSelector.roomInfo)),
-      this.store.pipe(
-        select(AppStore.MessengerSelector.SettingsSelector.gnbMenuIndex)
-      ),
-      this.store.pipe(
-        select(AppStore.MessengerSelector.EventSelector.selectAllInfoList)
-      )
-    ])
+    this.windowFocusChangedSubscription = this.nativeService
+      .windowFocusChanged()
       .pipe(
+        withLatestFrom(
+          this.store.pipe(
+            select(AppStore.MessengerSelector.RoomSelector.roomInfo)
+          ),
+          this.store.pipe(
+            select(AppStore.MessengerSelector.SettingsSelector.gnbMenuIndex)
+          ),
+          this.store.pipe(
+            select(AppStore.MessengerSelector.EventSelector.selectAllInfoList)
+          )
+        ),
         map(([windowFocusState, roomInfo, gnbMenuIndex, eventList]) => {
           if (windowFocusState === ElectronBrowserWindowChannel.Focus) {
             if (