diff --git a/apps/common/main/lib/collection/Users.js b/apps/common/main/lib/collection/Users.js
index 790d87e21..af293d4a5 100644
--- a/apps/common/main/lib/collection/Users.js
+++ b/apps/common/main/lib/collection/Users.js
@@ -64,10 +64,18 @@ define([
             return this.filter(function(item){return item.get('online') && !item.get('view')}).length;
         },
 
+        getVisibleEditingCount: function() {
+            return this.filter(function(item){return item.get('online') && !item.get('view') && !item.get('hidden')}).length;
+        },
+
         getEditingOriginalCount: function() {
             return this.chain().filter(function(item){return item.get('online') && !item.get('view')}).groupBy(function(item) {return item.get('idOriginal');}).size().value();
         },
 
+        getVisibleEditingOriginalCount: function() {
+            return this.chain().filter(function(item){return item.get('online') && !item.get('view') && !item.get('hidden')}).groupBy(function(item) {return item.get('idOriginal');}).size().value();
+        },
+
         findUser: function(id) {
             return this.find(
                 function(model){
diff --git a/apps/common/main/lib/component/SynchronizeTip.js b/apps/common/main/lib/component/SynchronizeTip.js
index 6c7c170e8..c56dd7c46 100644
--- a/apps/common/main/lib/component/SynchronizeTip.js
+++ b/apps/common/main/lib/component/SynchronizeTip.js
@@ -79,6 +79,7 @@ define([
                 this.placement = this.options.placement;
                 this.showLink = this.options.showLink;
                 this.showButton = this.options.showButton;
+                this.closable = this.options.closable;
                 this.textButton = this.options.textButton || '';
             },
 
diff --git a/apps/common/main/lib/controller/Chat.js b/apps/common/main/lib/controller/Chat.js
index aa895823d..002c178cc 100644
--- a/apps/common/main/lib/controller/Chat.js
+++ b/apps/common/main/lib/controller/Chat.js
@@ -89,6 +89,7 @@ define([
 
         setMode: function(mode) {
             this.mode = mode;
+            this.currentUserId = mode.user.id;
 
             if (this.api) {
                 if (this.mode.canCoAuthoring && this.mode.canChat)
@@ -142,7 +143,8 @@ define([
                                 username    : user.asc_getUserName(),
                                 online      : true,
                                 color       : user.asc_getColor(),
-                                view        : user.asc_getView()
+                                view        : user.asc_getView(),
+                                hidden      : !(user.asc_getIdOriginal()===this.currentUserId || AscCommon.UserInfoParser.isUserVisible(user.asc_getUserName()))
                             });
                             arrUsers[(user.asc_getId() == currentUserId ) ? 'unshift' : 'push'](usermodel);
                         }
@@ -165,7 +167,8 @@ define([
                         username    : change.asc_getUserName(),
                         online      : change.asc_getState(),
                         color       : change.asc_getColor(),
-                        view        : change.asc_getView()
+                        view        : change.asc_getView(),
+                        hidden      : !(change.asc_getIdOriginal()===this.currentUserId || AscCommon.UserInfoParser.isUserVisible(change.asc_getUserName()))
                     }));
                 } else {
                     user.set({online: change.asc_getState()});
diff --git a/apps/common/main/lib/model/User.js b/apps/common/main/lib/model/User.js
index 6f71c3de8..275e09e45 100644
--- a/apps/common/main/lib/model/User.js
+++ b/apps/common/main/lib/model/User.js
@@ -62,7 +62,8 @@ define([
                 color       : '#fff',
                 colorval    : null,
                 online      : false,
-                view        : false
+                view        : false,
+                hidden      : false
             }
         }
     });
diff --git a/apps/common/main/lib/view/Header.js b/apps/common/main/lib/view/Header.js
index 62f41c7e8..56a229dfa 100644
--- a/apps/common/main/lib/view/Header.js
+++ b/apps/common/main/lib/view/Header.js
@@ -130,11 +130,11 @@ define([
                             '</section>';
 
         function onResetUsers(collection, opts) {
-            var usercount = collection.getEditingCount();
+            var usercount = collection.getVisibleEditingCount();
             if ( $userList ) {
                 if ( usercount > 1 || usercount > 0 && appConfig && !appConfig.isEdit && !appConfig.isRestrictedEdit) {
                     $userList.html(templateUserList({
-                        users: collection.chain().filter(function(item){return item.get('online') && !item.get('view')}).groupBy(function(item) {return item.get('idOriginal');}).value(),
+                        users: collection.chain().filter(function(item){return item.get('online') && !item.get('view') && !item.get('hidden')}).groupBy(function(item) {return item.get('idOriginal');}).value(),
                         usertpl: _.template(templateUserItem),
                         fnEncode: function(username) {
                             return Common.Utils.String.htmlEncode(AscCommon.UserInfoParser.getParsedName(username));
@@ -153,7 +153,7 @@ define([
                 }
             }
 
-            applyUsers( usercount, collection.getEditingOriginalCount() );
+            applyUsers( usercount, collection.getVisibleEditingOriginalCount() );
         };
 
         function onUsersChanged(model) {
@@ -270,7 +270,7 @@ define([
                 $panelUsers.find('.cousers-menu')
                     .on('click', function(e) { return false; });
 
-                var editingUsers = storeUsers.getEditingCount();
+                var editingUsers = storeUsers.getVisibleEditingCount();
                 $btnUsers.tooltip({
                     title: (editingUsers > 1 || editingUsers>0 && !appConfig.isEdit && !appConfig.isRestrictedEdit) ? me.tipViewUsers : me.tipAccessRights,
                     titleNorm: me.tipAccessRights,
diff --git a/apps/documenteditor/main/app/view/DocumentHolder.js b/apps/documenteditor/main/app/view/DocumentHolder.js
index 47a545be6..ba79ab18d 100644
--- a/apps/documenteditor/main/app/view/DocumentHolder.js
+++ b/apps/documenteditor/main/app/view/DocumentHolder.js
@@ -366,6 +366,14 @@ define([
                 }
                 return me.guestText;
             };
+            var isUserVisible = function(id){
+                if (usersStore){
+                    var rec = usersStore.findUser(id);
+                    if (rec)
+                        return !rec.get('hidden');
+                }
+                return true;
+            };
             /** coauthoring end **/
 
 
@@ -577,7 +585,7 @@ define([
                         screenTip.toolTip.getBSTip().$tip.css({top: showPoint[1] + 'px', left: showPoint[0] + 'px'});
                     }
                     /** coauthoring begin **/
-                    else if (moveData.get_Type()==Asc.c_oAscMouseMoveDataTypes.LockedObject && me.mode.isEdit) { // 2 - locked object
+                    else if (moveData.get_Type()==Asc.c_oAscMouseMoveDataTypes.LockedObject && me.mode.isEdit && isUserVisible(moveData.get_UserId())) { // 2 - locked object
                         var src;
                         if (me.usertipcount >= me.usertips.length) {
                             src = $(document.createElement("div"));
@@ -613,6 +621,8 @@ define([
             };
 
             var onShowForeignCursorLabel = function(UserId, X, Y, color) {
+                if (!isUserVisible(UserId)) return;
+
                 /** coauthoring begin **/
                 var src;
                 for (var i=0; i<me.fastcoauthtips.length; i++) {
diff --git a/apps/presentationeditor/main/app/view/DocumentHolder.js b/apps/presentationeditor/main/app/view/DocumentHolder.js
index 64d5c12b7..01282cbbf 100644
--- a/apps/presentationeditor/main/app/view/DocumentHolder.js
+++ b/apps/presentationeditor/main/app/view/DocumentHolder.js
@@ -370,6 +370,14 @@ define([
                 }
                 return me.guestText;
             };
+            var isUserVisible = function(id){
+                if (usersStore){
+                    var rec = usersStore.findUser(id);
+                    if (rec)
+                        return !rec.get('hidden');
+                }
+                return true;
+            };
             /** coauthoring end **/
 
             var screenTip = {
@@ -534,7 +542,7 @@ define([
                         }
                     }
                     /** coauthoring begin **/
-                    else if (moveData.get_Type()==2 && me.mode.isEdit) { // 2 - locked object
+                    else if (moveData.get_Type()==2 && me.mode.isEdit && isUserVisible(moveData.get_UserId())) { // 2 - locked object
                         var src;
                         if (me.usertipcount >= me.usertips.length) {
                             src = $(document.createElement("div"));
@@ -568,6 +576,8 @@ define([
             };
 
             var onShowForeignCursorLabel = function(UserId, X, Y, color) {
+                if (!isUserVisible(UserId)) return;
+
                 /** coauthoring begin **/
                 var src;
                 for (var i=0; i<me.fastcoauthtips.length; i++) {
diff --git a/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js b/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
index 77a596703..cb94396ae 100644
--- a/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
+++ b/apps/spreadsheeteditor/main/app/controller/DocumentHolder.js
@@ -1327,7 +1327,7 @@ define([
                 }
 
                 if (me.permissions.isEdit) {
-                    if (index_locked) {
+                    if (index_locked && me.isUserVisible(dataarray[index_locked-1].asc_getUserId())) {
                         data = dataarray[index_locked-1];
 
                         if (!coAuthTip.XY)
@@ -1377,7 +1377,7 @@ define([
                             }
                         }
                     }
-                    if (index_foreign) {
+                    if (index_foreign && me.isUserVisible(dataarray[index_foreign-1].asc_getUserId())) {
                         data = dataarray[index_foreign-1];
 
                         if (!coAuthTip.XY)
@@ -3807,6 +3807,8 @@ define([
         },
 
         onShowForeignCursorLabel: function(UserId, X, Y, color) {
+            if (!this.isUserVisible(UserId)) return;
+
             /** coauthoring begin **/
             var src;
             var me = this;
@@ -3863,6 +3865,16 @@ define([
             return this.guestText;
         },
 
+        isUserVisible: function(id){
+            var usersStore = SSE.getCollection('Common.Collections.Users');
+            if (usersStore){
+                var rec = usersStore.findUser(id);
+                if (rec)
+                    return !rec.get('hidden');
+            }
+            return true;
+        },
+
         SetDisabled: function(state, canProtect) {
             this._isDisabled = state;
             this._canProtect = canProtect;
diff --git a/apps/spreadsheeteditor/main/app/view/FormatRulesManagerDlg.js b/apps/spreadsheeteditor/main/app/view/FormatRulesManagerDlg.js
index 31d51f997..4734874a7 100644
--- a/apps/spreadsheeteditor/main/app/view/FormatRulesManagerDlg.js
+++ b/apps/spreadsheeteditor/main/app/view/FormatRulesManagerDlg.js
@@ -286,7 +286,7 @@ define([  'text!spreadsheeteditor/main/app/template/FormatRulesManagerDlg.templa
                             ruleChanged: false, // true if was edited in FormatRulesEditDlg or was created, need to send this rule to sdk if true
                             props: rule,
                             lock: (idlock!==null && idlock!==undefined),
-                            lockuser: (idlock) ? this.getUserName(idlock) : this.guestText
+                            lockuser: (idlock) ? (this.isUserVisible(idlock) ? this.getUserName(idlock) : this.lockText) : this.guestText
                         });
                     }
                 }
@@ -816,7 +816,7 @@ define([  'text!spreadsheeteditor/main/app/template/FormatRulesManagerDlg.templa
             var store = this.rulesList.store,
                 rec = store.findWhere({ruleId: ruleId});
             if (rec) {
-                rec.set('lockuser', (userId) ? this.getUserName(userId) : this.guestText);
+                rec.set('lockuser', (userId) ? (this.isUserVisible(userId) ? this.getUserName(userId) : this.lockText) : this.guestText);
                 rec.set('lock', true);
                 this.updateButtons();
             }
@@ -845,6 +845,16 @@ define([  'text!spreadsheeteditor/main/app/template/FormatRulesManagerDlg.templa
             return this.guestText;
         },
 
+        isUserVisible: function(id){
+            var usersStore = SSE.getCollection('Common.Collections.Users');
+            if (usersStore){
+                var rec = usersStore.findUser(id);
+                if (rec)
+                    return !rec.get('hidden');
+            }
+            return true;
+        },
+
         txtTitle: 'Conditional Formatting',
         textNew: 'New',
         textEdit: 'Edit',
@@ -886,7 +896,8 @@ define([  'text!spreadsheeteditor/main/app/template/FormatRulesManagerDlg.templa
         textDuplicate: 'Duplicate values',
         textUnique: 'Unique values',
         tipIsLocked: 'This element is being edited by another user.',
-        guestText: 'Guest'
+        guestText: 'Guest',
+        lockText: 'Locked'
 
     }, SSE.Views.FormatRulesManagerDlg || {}));
 });
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/main/app/view/NameManagerDlg.js b/apps/spreadsheeteditor/main/app/view/NameManagerDlg.js
index bb2cc4d32..328e0ab7b 100644
--- a/apps/spreadsheeteditor/main/app/view/NameManagerDlg.js
+++ b/apps/spreadsheeteditor/main/app/view/NameManagerDlg.js
@@ -206,7 +206,7 @@ define([  'text!spreadsheeteditor/main/app/template/NameManagerDlg.template',
                         scopeName: (scope===null) ? this.textWorkbook: this.sheetNames[scope],
                         range: (type===Asc.c_oAscDefNameType.slicer) ? '' : this.ranges[i].asc_getRef(),
                         lock: (id!==null && id!==undefined),
-                        lockuser: (id) ? this.getUserName(id) : this.guestText,
+                        lockuser: (id) ? (this.isUserVisible(id) ? this.getUserName(id) : this.lockText) : this.guestText,
                         type: type,
                         isTable: type===Asc.c_oAscDefNameType.table,
                         isSlicer: type===Asc.c_oAscDefNameType.slicer
@@ -386,6 +386,16 @@ define([  'text!spreadsheeteditor/main/app/template/NameManagerDlg.template',
             return this.guestText;
         },
 
+        isUserVisible: function(id){
+            var usersStore = SSE.getCollection('Common.Collections.Users');
+            if (usersStore){
+                var rec = usersStore.findUser(id);
+                if (rec)
+                    return !rec.get('hidden');
+            }
+            return true;
+        },
+
         onSelectRangeItem: function(lisvView, itemView, record) {
             if (!record) return;
 
@@ -451,7 +461,8 @@ define([  'text!spreadsheeteditor/main/app/template/NameManagerDlg.template',
         textWorkbook: 'Workbook',
         guestText: 'Guest',
         tipIsLocked: 'This element is being edited by another user.',
-        warnDelete: 'Are you sure you want to delete the name {0}?'
+        warnDelete: 'Are you sure you want to delete the name {0}?',
+        lockText: 'Locked'
 
     }, SSE.Views.NameManagerDlg || {}));
 });
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/main/app/view/ProtectRangesDlg.js b/apps/spreadsheeteditor/main/app/view/ProtectRangesDlg.js
index 9e0356252..517d5ca4e 100644
--- a/apps/spreadsheeteditor/main/app/view/ProtectRangesDlg.js
+++ b/apps/spreadsheeteditor/main/app/view/ProtectRangesDlg.js
@@ -169,7 +169,7 @@ define([  'text!spreadsheeteditor/main/app/template/ProtectRangesDlg.template',
                         range: ranges[i].asc_getSqref() || '',
                         props: ranges[i],
                         lock: (id!==null && id!==undefined),
-                        lockuser: (id) ? this.getUserName(id) : this.guestText
+                        lockuser: (id) ? (this.isUserVisible(id) ? this.getUserName(id) : this.lockText) : this.guestText
                     });
                 }
                 this.rangeList.store.reset(arr);
@@ -334,6 +334,16 @@ define([  'text!spreadsheeteditor/main/app/template/ProtectRangesDlg.template',
             return this.guestText;
         },
 
+        isUserVisible: function(id){
+            var usersStore = SSE.getCollection('Common.Collections.Users');
+            if (usersStore){
+                var rec = usersStore.findUser(id);
+                if (rec)
+                    return !rec.get('hidden');
+            }
+            return true;
+        },
+
         onSelectRangeItem: function(lisvView, itemView, record) {
             if (!record) return;
 
@@ -395,7 +405,7 @@ define([  'text!spreadsheeteditor/main/app/template/ProtectRangesDlg.template',
             var store = this.rulesList.store,
                 rec = store.findWhere({ruleId: ruleId});
             if (rec) {
-                rec.set('lockuser', (userId) ? this.getUserName(userId) : this.guestText);
+                rec.set('lockuser', (userId) ? (this.isUserVisible(userId) ? this.getUserName(userId) : this.lockText) : this.guestText);
                 rec.set('lock', true);
                 this.updateButtons();
             }
@@ -438,7 +448,8 @@ define([  'text!spreadsheeteditor/main/app/template/ProtectRangesDlg.template',
         txtYes: 'Yes',
         txtNo: 'No',
         txtEditRange: 'Edit Range',
-        txtNewRange: 'New Range'
+        txtNewRange: 'New Range',
+        lockText: 'Locked'
 
     }, SSE.Views.ProtectRangesDlg || {}));
 });
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/main/app/view/ViewManagerDlg.js b/apps/spreadsheeteditor/main/app/view/ViewManagerDlg.js
index 1c163b4ca..a756556b6 100644
--- a/apps/spreadsheeteditor/main/app/view/ViewManagerDlg.js
+++ b/apps/spreadsheeteditor/main/app/view/ViewManagerDlg.js
@@ -192,7 +192,7 @@ define([
                         active: view.asc_getIsActive(),
                         view: view,
                         lock: (id!==null && id!==undefined),
-                        lockuser: (id) ? this.getUserName(id) : this.guestText
+                        lockuser: (id) ? (this.isUserVisible(id) ? this.getUserName(id) : this.lockText) : this.guestText
                     });
                     view.asc_getIsActive() && (active = i);
                 }
@@ -315,6 +315,16 @@ define([
             return this.guestText;
         },
 
+        isUserVisible: function(id){
+            var usersStore = SSE.getCollection('Common.Collections.Users');
+            if (usersStore){
+                var rec = usersStore.findUser(id);
+                if (rec)
+                    return !rec.get('hidden');
+            }
+            return true;
+        },
+
         onSelectItem: function(lisvView, itemView, record) {
             if (!record) return;
 
@@ -374,7 +384,8 @@ define([
         textRenameLabel: 'Rename view',
         textRenameError: 'View name must not be empty.',
         warnDeleteView: "You are trying to delete the currently enabled view '%1'.<br>Close this view and delete it?",
-        textLongName: 'Enter a name that is less than 128 characters.'
+        textLongName: 'Enter a name that is less than 128 characters.',
+        lockText: 'Locked'
 
     }, SSE.Views.ViewManagerDlg || {}));
 });
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/main/locale/en.json b/apps/spreadsheeteditor/main/locale/en.json
index cb69493a2..64a70d656 100644
--- a/apps/spreadsheeteditor/main/locale/en.json
+++ b/apps/spreadsheeteditor/main/locale/en.json
@@ -2292,6 +2292,7 @@
   "SSE.Views.FormatRulesManagerDlg.textUp": "Move rule up",
   "SSE.Views.FormatRulesManagerDlg.tipIsLocked": "This element is being edited by another user.",
   "SSE.Views.FormatRulesManagerDlg.txtTitle": "Conditional Formatting",
+  "SSE.Views.FormatRulesManagerDlg.lockText": "Locked",
   "SSE.Views.FormatSettingsDialog.textCategory": "Category",
   "SSE.Views.FormatSettingsDialog.textDecimal": "Decimal",
   "SSE.Views.FormatSettingsDialog.textFormat": "Format",
@@ -2521,6 +2522,7 @@
   "SSE.Views.NameManagerDlg.tipIsLocked": "This element is being edited by another user.",
   "SSE.Views.NameManagerDlg.txtTitle": "Name Manager",
   "SSE.Views.NameManagerDlg.warnDelete": "Are you sure you want to delete the name {0}?",
+  "SSE.Views.NameManagerDlg.lockText": "Locked",
   "SSE.Views.PageMarginsDialog.textBottom": "Bottom",
   "SSE.Views.PageMarginsDialog.textLeft": "Left",
   "SSE.Views.PageMarginsDialog.textRight": "Right",
@@ -2784,6 +2786,7 @@
   "SSE.Views.ProtectRangesDlg.txtTitle": "Allow Users to Edit Ranges",
   "SSE.Views.ProtectRangesDlg.txtYes": "Yes",
   "SSE.Views.ProtectRangesDlg.warnDelete": "Are you sure you want to delete the name {0}?",
+  "SSE.Views.ProtectRangesDlg.lockText": "Locked",
   "SSE.Views.RemoveDuplicatesDialog.textColumns": "Columns",
   "SSE.Views.RemoveDuplicatesDialog.textDescription": "To delete duplicate values, select one or more columns that contain duplicates.",
   "SSE.Views.RemoveDuplicatesDialog.textHeaders": "My data has headers",
@@ -3526,6 +3529,7 @@
   "SSE.Views.ViewManagerDlg.tipIsLocked": "This element is being edited by another user.",
   "SSE.Views.ViewManagerDlg.txtTitle": "Sheet View Manager",
   "SSE.Views.ViewManagerDlg.warnDeleteView": "You are trying to delete the currently enabled view '%1'.<br>Close this view and delete it?",
+  "SSE.Views.ViewManagerDlg.lockText": "Locked",
   "SSE.Views.ViewTab.capBtnFreeze": "Freeze Panes",
   "SSE.Views.ViewTab.capBtnSheetView": "Sheet View",
   "SSE.Views.ViewTab.textClose": "Close",