diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
index 37427654..fd88af46 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-sidenav/organization.component.ts
@@ -439,6 +439,10 @@ export class OrganizationComponent
 
   /** 전체 체크여부 */
   getCheckedAllUser() {
+    if (!this.loginRes) {
+      return false;
+    }
+
     const compareList: UserInfoSS[] = this.isShowSearch
       ? this.searchUserInfos
       : this.selectedDepartmentUserInfoList;
diff --git a/projects/ucap-webmessenger-app/src/app/services/notification.service.ts b/projects/ucap-webmessenger-app/src/app/services/notification.service.ts
index bd44be2a..927a7459 100644
--- a/projects/ucap-webmessenger-app/src/app/services/notification.service.ts
+++ b/projects/ucap-webmessenger-app/src/app/services/notification.service.ts
@@ -116,6 +116,19 @@ import { LogoutInfo, KEY_LOGOUT_INFO } from '@app/types';
 import { TranslateService } from '@ngx-translate/core';
 import { deleteMessageSuccess } from '@app/store/messenger/message';
 import { ServerErrorCode } from '@ucap-webmessenger/protocol';
+import {
+  OptionProtocolService,
+  SSVC_TYPE_OPTION_REG_UPD_RES,
+  RegUpdateResponse,
+  RegUpdateNotification
+} from '@ucap-webmessenger/protocol-option';
+import {
+  GeneralSetting,
+  Settings,
+  NotificationSetting,
+  ChatSetting
+} from '@ucap-webmessenger/ui-settings';
+import clone from 'clone';
 
 @Injectable()
 export class AppNotificationService {
@@ -128,6 +141,7 @@ export class AppNotificationService {
     private buddyProtocolService: BuddyProtocolService,
     private statusProtocolService: StatusProtocolService,
     private translateService: TranslateService,
+    private optionProtocolService: OptionProtocolService,
     private umgProtocolService: UmgProtocolService,
     private localStorageService: LocalStorageService,
     private sessionStorageService: SessionStorageService,
@@ -643,6 +657,56 @@ export class AppNotificationService {
         })
       )
       .subscribe();
+    this.optionProtocolService.notification$
+      .pipe(
+        tap(notiOrRes => {
+          switch (notiOrRes.SSVC_TYPE) {
+            case SSVC_TYPE_OPTION_REG_UPD_RES:
+              {
+                const noti = notiOrRes as RegUpdateNotification;
+                this.logger.debug(
+                  'Notification::optionProtocolService::RegUpdateNotification',
+                  noti
+                );
+
+                const appUserInfo: AppUserInfo = this.localStorageService.encGet<
+                  AppUserInfo
+                >(KEY_APP_USER_INFO, environment.customConfig.appKey);
+
+                const modifiedSettings: Settings = clone(appUserInfo.settings);
+                modifiedSettings.notification.method = noti.notificationMethod;
+                modifiedSettings.notification.method = noti.notificationMethod0;
+                modifiedSettings.notification.receiveForMobile =
+                  noti.mobileNotification;
+                modifiedSettings.notification.use = noti.receiveNotification;
+                modifiedSettings.notification.alertExposureTime =
+                  noti.notificationExposureTime;
+
+                modifiedSettings.chat.fontFamily = noti.fontFamily;
+                modifiedSettings.chat.fontSize = noti.fontSize;
+
+                modifiedSettings.presence.absenceTime = noti.absenceTime;
+
+                modifiedSettings.general.timezone = noti.timeZone;
+                modifiedSettings.general.locale = noti.menuLanguage;
+                modifiedSettings.general.hrInfoLocale =
+                  noti.hrInformationLanguage;
+
+                appUserInfo.settings = modifiedSettings;
+
+                this.localStorageService.encSet<AppUserInfo>(
+                  KEY_APP_USER_INFO,
+                  appUserInfo,
+                  environment.customConfig.appKey
+                );
+              }
+              break;
+            default:
+              break;
+          }
+        })
+      )
+      .subscribe();
     this.umgProtocolService.notification$
       .pipe(
         tap(notiOrRes => {
diff --git a/projects/ucap-webmessenger-protocol-option/src/lib/protocols/reg-update.ts b/projects/ucap-webmessenger-protocol-option/src/lib/protocols/reg-update.ts
index e4160f89..41c5238e 100644
--- a/projects/ucap-webmessenger-protocol-option/src/lib/protocols/reg-update.ts
+++ b/projects/ucap-webmessenger-protocol-option/src/lib/protocols/reg-update.ts
@@ -8,7 +8,8 @@ import {
   ProtocolDecoder,
   ProtocolMessage,
   PacketBodyValue,
-  decodeProtocolMessage
+  decodeProtocolMessage,
+  ProtocolNotification
 } from '@ucap-webmessenger/protocol';
 
 export interface RegUpdateRequest extends ProtocolRequest {
@@ -70,6 +71,10 @@ export interface RegUpdateResponse extends ProtocolResponse {
   translationKey?: string;
 }
 
+export interface RegUpdateNotification
+  extends RegUpdateResponse,
+    ProtocolNotification {}
+
 export const encodeRegUpdate: ProtocolEncoder<RegUpdateRequest> = (
   req: RegUpdateRequest
 ) => {
@@ -151,3 +156,24 @@ export const decodeRegUpdate: ProtocolDecoder<RegUpdateResponse> = (
     translationKey: message.bodyList[13]
   } as RegUpdateResponse);
 };
+
+export const decodeRegUpdateNotification: ProtocolDecoder<RegUpdateNotification> = (
+  message: ProtocolMessage
+) => {
+  return decodeProtocolMessage(message, {
+    notificationMethod: message.bodyList[0] as NotificationMethod,
+    mobileNotification: message.bodyList[1] === 1 ? true : false,
+    fontFamily: message.bodyList[2],
+    fontSize: message.bodyList[3],
+    receiveNotification: message.bodyList[4] === 1 ? true : false,
+    notificationMethod0: message.bodyList[5],
+    notificationExposureTime: message.bodyList[6],
+    timeZone: message.bodyList[7],
+    timeZoneValue: message.bodyList[8],
+    absenceTime: message.bodyList[9],
+    menuLanguage: message.bodyList[10],
+    hrInformationLanguage: message.bodyList[11],
+    deviceType: message.bodyList[12],
+    translationKey: message.bodyList[13]
+  } as RegUpdateResponse);
+};
diff --git a/projects/ucap-webmessenger-protocol-option/src/lib/services/option-protocol.service.ts b/projects/ucap-webmessenger-protocol-option/src/lib/services/option-protocol.service.ts
index bcba489d..e49c27e4 100644
--- a/projects/ucap-webmessenger-protocol-option/src/lib/services/option-protocol.service.ts
+++ b/projects/ucap-webmessenger-protocol-option/src/lib/services/option-protocol.service.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 
-import { Observable } from 'rxjs';
-import { take, map } from 'rxjs/operators';
+import { Observable, Subject } from 'rxjs';
+import { take, map, share, filter, tap } from 'rxjs/operators';
 
 import { ProtocolService } from '@ucap-webmessenger/protocol';
 import {
@@ -11,7 +11,8 @@ import {
   SSVC_TYPE_OPTION_REG_VIEW_REQ,
   SSVC_TYPE_OPTION_REG_UPD_REQ,
   SSVC_TYPE_OPTION_CALL_VIEW_REQ,
-  SSVC_TYPE_OPTION_CALL_UPD_REQ
+  SSVC_TYPE_OPTION_CALL_UPD_REQ,
+  SSVC_TYPE_OPTION_REG_UPD_RES
 } from '../types/service';
 import {
   encodeView,
@@ -35,7 +36,9 @@ import {
   RegUpdateRequest,
   RegUpdateResponse,
   encodeRegUpdate,
-  decodeRegUpdate
+  decodeRegUpdate,
+  decodeRegUpdateNotification,
+  RegUpdateNotification
 } from '../protocols/reg-update';
 import {
   CallViewRequest,
@@ -50,11 +53,38 @@ import {
   decodeCallUpdate
 } from '../protocols/call-update';
 
+type Notifications = RegUpdateNotification;
+
 @Injectable({
   providedIn: 'root'
 })
 export class OptionProtocolService {
-  constructor(private protocolService: ProtocolService) {}
+  private notificationSubject: Subject<Notifications>;
+  public notification$: Observable<Notifications>;
+
+  constructor(private protocolService: ProtocolService) {
+    this.notificationSubject = new Subject();
+    this.notification$ = this.notificationSubject.asObservable().pipe(share());
+
+    this.protocolService.serverMessage
+      .pipe(
+        filter(message => message.serviceType === SVC_TYPE_OPTION),
+        tap(message => {
+          switch (message.subServiceType) {
+            case SSVC_TYPE_OPTION_REG_UPD_RES:
+              {
+                this.notificationSubject.next(
+                  decodeRegUpdateNotification(message)
+                );
+              }
+              break;
+            default:
+              break;
+          }
+        })
+      )
+      .subscribe();
+  }
 
   public view(req: ViewRequest): Observable<ViewResponse> {
     return this.protocolService