diff --git a/apps/documenteditor/main/app/view/FileMenuPanels.js b/apps/documenteditor/main/app/view/FileMenuPanels.js
index 67fcdb4c3..eb5ab2551 100644
--- a/apps/documenteditor/main/app/view/FileMenuPanels.js
+++ b/apps/documenteditor/main/app/view/FileMenuPanels.js
@@ -1525,8 +1525,15 @@ define([
             this.coreProps = (this.api) ? this.api.asc_getCoreProps() : null;
             if (this.coreProps) {
                 var value = this.coreProps.asc_getCreated();
-                if (value)
-                    this.lblDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 this._ShowHideInfoItem(this.lblDate, !!value);
             } else if (pdfProps)
                 this.updatePdfInfo(pdfProps);
@@ -1544,8 +1551,16 @@ define([
             if (props) {
                 var visible = false;
                 value = props.asc_getModified();
-                if (value)
-                    this.lblModifyDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 visible = this._ShowHideInfoItem(this.lblModifyDate, !!value) || visible;
                 value = props.asc_getLastModifiedBy();
                 if (value)
@@ -1586,7 +1601,13 @@ define([
                 value = props.CreationDate;
                 if (value) {
                     value = new Date(value);
-                    this.lblDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
                 }
                 this._ShowHideInfoItem(this.lblDate, !!value);
 
@@ -1594,7 +1615,13 @@ define([
                 value = props.ModDate;
                 if (value) {
                     value = new Date(value);
-                    this.lblModifyDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
                 }
                 visible = this._ShowHideInfoItem(this.lblModifyDate, !!value) || visible;
                 visible = this._ShowHideInfoItem(this.lblModifyBy, false) || visible;
diff --git a/apps/presentationeditor/main/app/view/FileMenuPanels.js b/apps/presentationeditor/main/app/view/FileMenuPanels.js
index 83593ed40..bc3690f07 100644
--- a/apps/presentationeditor/main/app/view/FileMenuPanels.js
+++ b/apps/presentationeditor/main/app/view/FileMenuPanels.js
@@ -1215,8 +1215,15 @@ define([
             this.coreProps = (this.api) ? this.api.asc_getCoreProps() : null;
             if (this.coreProps) {
                 var value = this.coreProps.asc_getCreated();
-                if (value)
-                    this.lblDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 this._ShowHideInfoItem(this.lblDate, !!value);
             }
         },
@@ -1241,8 +1248,15 @@ define([
             if (props) {
                 var visible = false;
                 value = props.asc_getModified();
-                if (value)
-                    this.lblModifyDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 visible = this._ShowHideInfoItem(this.lblModifyDate, !!value) || visible;
                 value = props.asc_getLastModifiedBy();
                 if (value)
diff --git a/apps/spreadsheeteditor/main/app/controller/Main.js b/apps/spreadsheeteditor/main/app/controller/Main.js
index 910242136..4f1f37aea 100644
--- a/apps/spreadsheeteditor/main/app/controller/Main.js
+++ b/apps/spreadsheeteditor/main/app/controller/Main.js
@@ -1945,12 +1945,19 @@ define([
                     case Asc.c_oAscError.ID.FillAllRowsWarning:
                         var fill = errData[0],
                             have = errData[1],
-                            fillWithSeparator = fill.toLocaleString(this.appOptions.lang);
+                            lang = (this.appOptions.lang || 'en').replace('_', '-').toLowerCase(),
+                            fillWithSeparator;
+                        try {
+                            fillWithSeparator = fill.toLocaleString(lang);
+                        } catch (e) {
+                            lang = 'en';
+                            fillWithSeparator = fill.toLocaleString(lang);
+                        }
                         if (this.appOptions.isDesktopApp && this.appOptions.isOffline) {
                             config.msg = fill > have ? Common.Utils.String.format(this.textFormulaFilledAllRowsWithEmpty, fillWithSeparator) : Common.Utils.String.format(this.textFormulaFilledAllRows, fillWithSeparator);
                             config.buttons = [{caption: this.textFillOtherRows, primary: true, value: 'fillOther'}, 'close'];
                         } else {
-                            config.msg = fill >= have ? Common.Utils.String.format(this.textFormulaFilledFirstRowsOtherIsEmpty, fillWithSeparator) : Common.Utils.String.format(this.textFormulaFilledFirstRowsOtherHaveData, fillWithSeparator, (have - fill).toLocaleString(this.appOptions.lang));
+                            config.msg = fill >= have ? Common.Utils.String.format(this.textFormulaFilledFirstRowsOtherIsEmpty, fillWithSeparator) : Common.Utils.String.format(this.textFormulaFilledFirstRowsOtherHaveData, fillWithSeparator, (have - fill).toLocaleString(lang));
                             config.buttons = ['ok'];
                         }
                         config.maxwidth = 400;
diff --git a/apps/spreadsheeteditor/main/app/view/FileMenuPanels.js b/apps/spreadsheeteditor/main/app/view/FileMenuPanels.js
index 9049bd9d6..b39b9267c 100644
--- a/apps/spreadsheeteditor/main/app/view/FileMenuPanels.js
+++ b/apps/spreadsheeteditor/main/app/view/FileMenuPanels.js
@@ -1590,8 +1590,15 @@ SSE.Views.FileMenuPanels.RecentFiles = Common.UI.BaseView.extend({
             this.coreProps = (this.api) ? this.api.asc_getCoreProps() : null;
             if (this.coreProps) {
                 var value = this.coreProps.asc_getCreated();
-                if (value)
-                    this.lblDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 this._ShowHideInfoItem(this.lblDate, !!value);
             }
         },
@@ -1616,8 +1623,15 @@ SSE.Views.FileMenuPanels.RecentFiles = Common.UI.BaseView.extend({
             if (props) {
                 var visible = false;
                 value = props.asc_getModified();
-                if (value)
-                    this.lblModifyDate.text(value.toLocaleString(this.mode.lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(this.mode.lang, {timeStyle: 'short'}));
+                if (value) {
+                    var lang = (this.mode.lang || 'en').replace('_', '-').toLowerCase();
+                    try {
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    } catch (e) {
+                        lang = 'en';
+                        this.lblModifyDate.text(value.toLocaleString(lang, {year: 'numeric', month: '2-digit', day: '2-digit'}) + ' ' + value.toLocaleString(lang, {timeStyle: 'short'}));
+                    }
+                }
                 visible = this._ShowHideInfoItem(this.lblModifyDate, !!value) || visible;
                 value = props.asc_getLastModifiedBy();
                 if (value)