diff --git a/apps/documenteditor/main/app/controller/Main.js b/apps/documenteditor/main/app/controller/Main.js
index f841a5cf7..1d11ef161 100644
--- a/apps/documenteditor/main/app/controller/Main.js
+++ b/apps/documenteditor/main/app/controller/Main.js
@@ -473,7 +473,7 @@ define([
                     docInfo.put_Lang(this.editorConfig.lang);
                     docInfo.put_Mode(this.editorConfig.mode);
 
-                    if (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
+                    if (this.editorConfig.coEditing && typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
                         docInfo.put_CoEditingMode(this.editorConfig.coEditing.mode);
 
                     var enable = !this.editorConfig.customization || (this.editorConfig.customization.macros!==false);
@@ -1548,8 +1548,8 @@ define([
                     Common.NotificationCenter.on('comments:showdummy', _.bind(this.onShowDummyComment, this));
 
                 // change = true by default in editor, change = false by default in viewer
-                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false) ||
-                                                    !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===true) ;
+                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(this.editorConfig.coEditing && this.editorConfig.coEditing.change===false) ||
+                                                    !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (this.editorConfig.coEditing && this.editorConfig.coEditing.change===true) ;
 
                 this.loadCoAuthSettings();
                 this.applyModeCommonElements();
diff --git a/apps/presentationeditor/main/app/controller/Main.js b/apps/presentationeditor/main/app/controller/Main.js
index 69237409d..fc939b9bc 100644
--- a/apps/presentationeditor/main/app/controller/Main.js
+++ b/apps/presentationeditor/main/app/controller/Main.js
@@ -430,7 +430,7 @@ define([
                     docInfo.put_Lang(this.editorConfig.lang);
                     docInfo.put_Mode(this.editorConfig.mode);
 
-                    if (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
+                    if (this.editorConfig.coEditing && typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
                         docInfo.put_CoEditingMode(this.editorConfig.coEditing.mode);
 
                     var enable = !this.editorConfig.customization || (this.editorConfig.customization.macros!==false);
@@ -1195,8 +1195,8 @@ define([
                 this.editorConfig.customization && Common.UI.FeaturesManager.init(this.editorConfig.customization.features, this.appOptions.canBrandingExt);
 
                 // change = true by default in editor, change = false by default in viewer
-                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false) ||
-                                                    !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===true) ;
+                this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && this.appOptions.canCoAuthoring && !(this.editorConfig.coEditing && this.editorConfig.coEditing.change===false) ||
+                                                    !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (this.editorConfig.coEditing && this.editorConfig.coEditing.change===true) ;
 
                 this.loadCoAuthSettings();
                 this.applyModeCommonElements();
diff --git a/apps/spreadsheeteditor/main/app/controller/Main.js b/apps/spreadsheeteditor/main/app/controller/Main.js
index e38e48a33..bbc3c28db 100644
--- a/apps/spreadsheeteditor/main/app/controller/Main.js
+++ b/apps/spreadsheeteditor/main/app/controller/Main.js
@@ -504,7 +504,7 @@ define([
                     docInfo.put_Lang(this.editorConfig.lang);
                     docInfo.put_Mode(this.editorConfig.mode);
 
-                    if (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
+                    if (this.editorConfig.coEditing && typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.mode!==undefined)
                         docInfo.put_CoEditingMode(this.editorConfig.coEditing.mode);
 
                     var enable = !this.editorConfig.customization || (this.editorConfig.customization.macros!==false);
@@ -1284,8 +1284,8 @@ define([
 
                 // change = true by default in editor, change = false by default in viewer
                 this.appOptions.canChangeCoAuthoring = this.appOptions.isEdit && !(this.appOptions.isEditDiagram || this.appOptions.isEditMailMerge || this.appOptions.isEditOle) && this.appOptions.canCoAuthoring &&
-                                                        !(typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===false) ||
-                                                        !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (typeof this.editorConfig.coEditing == 'object' && this.editorConfig.coEditing.change===true) ;
+                                                        !(this.editorConfig.coEditing && this.editorConfig.coEditing.change===false) ||
+                                                        !this.appOptions.isEdit && !this.appOptions.isRestrictedEdit && (this.editorConfig.coEditing && this.editorConfig.coEditing.change===true) ;
 
                 if (!this.appOptions.isEditDiagram && !this.appOptions.isEditMailMerge && !this.appOptions.isEditOle) {
                     this.appOptions.canBrandingExt = params.asc_getCanBranding() && (typeof this.editorConfig.customization == 'object' || this.editorConfig.plugins);