diff --git a/apps/documenteditor/embed/js/ApplicationController.js b/apps/documenteditor/embed/js/ApplicationController.js
index 2238c2de6..be5cfa956 100644
--- a/apps/documenteditor/embed/js/ApplicationController.js
+++ b/apps/documenteditor/embed/js/ApplicationController.js
@@ -731,6 +731,10 @@ DE.ApplicationController = new(function(){
                 message = me.errorLoadingFont;
                 break;
 
+            case Asc.c_oAscError.ID.KeyExpire:
+                message = me.errorTokenExpire;
+                break;
+
             default:
                 message = me.errorDefaultMessage.replace('%1', id);
                 break;
@@ -935,6 +939,7 @@ DE.ApplicationController = new(function(){
         errorForceSave: "An error occurred while saving the file. Please use the 'Download as' option to save the file to your computer hard drive or try again later.",
         txtEmpty: '(Empty)',
         txtPressLink: 'Press Ctrl and click link',
-        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.'
+        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.',
+        errorTokenExpire: 'The document security token has expired.<br>Please contact your Document Server administrator.'
     }
 })();
\ No newline at end of file
diff --git a/apps/documenteditor/embed/locale/en.json b/apps/documenteditor/embed/locale/en.json
index 87c407871..17ba71f73 100644
--- a/apps/documenteditor/embed/locale/en.json
+++ b/apps/documenteditor/embed/locale/en.json
@@ -19,6 +19,7 @@
   "DE.ApplicationController.errorSubmit": "Submit failed.",
   "DE.ApplicationController.errorUpdateVersionOnDisconnect": "Internet connection has been restored, and the file version has been changed.<br>Before you can continue working, you need to download the file or copy its content to make sure nothing is lost, and then reload this page.",
   "DE.ApplicationController.errorUserDrop": "The file cannot be accessed right now.",
+  "DE.ApplicationController.errorTokenExpire": "The document security token has expired.<br>Please contact your Document Server administrator.",
   "DE.ApplicationController.notcriticalErrorTitle": "Warning",
   "DE.ApplicationController.scriptLoadError": "The connection is too slow, some of the components could not be loaded. Please reload the page.",
   "DE.ApplicationController.textAnonymous": "Anonymous",
diff --git a/apps/documenteditor/forms/app/controller/ApplicationController.js b/apps/documenteditor/forms/app/controller/ApplicationController.js
index 8d095d3c7..1692decd0 100644
--- a/apps/documenteditor/forms/app/controller/ApplicationController.js
+++ b/apps/documenteditor/forms/app/controller/ApplicationController.js
@@ -224,6 +224,15 @@ define([
                     config.msg = this.errorLoadingFont;
                     break;
 
+                case Asc.c_oAscError.ID.Warning:
+                    config.msg = this.errorConnectToServer;
+                    config.closable = false;
+                    break;
+
+                case Asc.c_oAscError.ID.KeyExpire:
+                    config.msg = this.errorTokenExpire;
+                    break;
+
                 default:
                     config.msg = (typeof id == 'string') ? id : this.errorDefaultMessage.replace('%1', id);
                     break;
@@ -253,7 +262,14 @@ define([
                 config.iconCls  = 'warn';
                 config.buttons  = ['ok'];
                 config.callback = _.bind(function(btn){
-                    if (id == Asc.c_oAscError.ID.EditingError) {
+                    if (id == Asc.c_oAscError.ID.Warning && btn == 'ok' && this.appOptions.canDownload) {
+                        Common.UI.Menu.Manager.hideAll();
+                        var me = this;
+                        setTimeout(function() {
+                            $('button', me.view.btnOptions.cmpEl).click();
+                        }, 10);
+
+                    } else if (id == Asc.c_oAscError.ID.EditingError) {
                         Common.NotificationCenter.trigger('api:disconnect', true); // enable download and print
                     }
                 }, this);
@@ -1347,7 +1363,9 @@ define([
         textBuyNow: 'Visit website',
         textNoLicenseTitle: 'License limit reached',
         textContactUs: 'Contact sales',
-        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.'
+        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.',
+        errorConnectToServer: 'The document could not be saved. Please check connection settings or contact your administrator.<br>When you click the \'OK\' button, you will be prompted to download the document.',
+        errorTokenExpire: 'The document security token has expired.<br>Please contact your Document Server administrator.'
 
     }, DE.Controllers.ApplicationController));
 });
diff --git a/apps/documenteditor/forms/locale/en.json b/apps/documenteditor/forms/locale/en.json
index 78089db32..32300d02c 100644
--- a/apps/documenteditor/forms/locale/en.json
+++ b/apps/documenteditor/forms/locale/en.json
@@ -75,6 +75,8 @@
   "DE.Controllers.ApplicationController.errorUpdateVersion": "The file version has been changed. The page will be reloaded.",
   "DE.Controllers.ApplicationController.errorUpdateVersionOnDisconnect": "Internet connection has been restored, and the file version has been changed.<br>Before you can continue working, you need to download the file or copy its content to make sure nothing is lost, and then reload this page.",
   "DE.Controllers.ApplicationController.errorUserDrop": "The file cannot be accessed right now.",
+  "DE.Controllers.ApplicationController.errorConnectToServer": "The document could not be saved. Please check connection settings or contact your administrator.<br>When you click the 'OK' button, you will be prompted to download the document.",
+  "DE.Controllers.ApplicationController.errorTokenExpire": "The document security token has expired.<br>Please contact your Document Server administrator.",
   "DE.Controllers.ApplicationController.notcriticalErrorTitle": "Warning",
   "DE.Controllers.ApplicationController.scriptLoadError": "The connection is too slow, some of the components could not be loaded. Please reload the page.",
   "DE.Controllers.ApplicationController.textAnonymous": "Anonymous",
diff --git a/apps/presentationeditor/embed/js/ApplicationController.js b/apps/presentationeditor/embed/js/ApplicationController.js
index 2519cb58b..1066ac1ca 100644
--- a/apps/presentationeditor/embed/js/ApplicationController.js
+++ b/apps/presentationeditor/embed/js/ApplicationController.js
@@ -566,6 +566,10 @@ PE.ApplicationController = new(function(){
                 message = me.errorLoadingFont;
                 break;
 
+            case Asc.c_oAscError.ID.KeyExpire:
+                message = me.errorTokenExpire;
+                break;
+
             default:
                 message = me.errorDefaultMessage.replace('%1', id);
                 break;
@@ -730,6 +734,7 @@ PE.ApplicationController = new(function(){
         textGuest: 'Guest',
         textAnonymous: 'Anonymous',
         errorForceSave: "An error occurred while saving the file. Please use the 'Download as' option to save the file to your computer hard drive or try again later.",
-        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.'
+        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.',
+        errorTokenExpire: 'The document security token has expired.<br>Please contact your Document Server administrator.'
     }
 })();
diff --git a/apps/presentationeditor/embed/locale/en.json b/apps/presentationeditor/embed/locale/en.json
index 8ee3a58b1..1f1adbde6 100644
--- a/apps/presentationeditor/embed/locale/en.json
+++ b/apps/presentationeditor/embed/locale/en.json
@@ -17,6 +17,7 @@
   "PE.ApplicationController.errorLoadingFont": "Fonts are not loaded.<br>Please contact your Document Server administrator.",
   "PE.ApplicationController.errorUpdateVersionOnDisconnect": "Internet connection has been restored, and the file version has been changed.<br>Before you can continue working, you need to download the file or copy its content to make sure nothing is lost, and then reload this page.",
   "PE.ApplicationController.errorUserDrop": "The file cannot be accessed right now.",
+  "PE.ApplicationController.errorTokenExpire": "The document security token has expired.<br>Please contact your Document Server administrator.",
   "PE.ApplicationController.notcriticalErrorTitle": "Warning",
   "PE.ApplicationController.scriptLoadError": "The connection is too slow, some of the components could not be loaded. Please reload the page.",
   "PE.ApplicationController.textAnonymous": "Anonymous",
diff --git a/apps/spreadsheeteditor/embed/js/ApplicationController.js b/apps/spreadsheeteditor/embed/js/ApplicationController.js
index c17650446..5dd383796 100644
--- a/apps/spreadsheeteditor/embed/js/ApplicationController.js
+++ b/apps/spreadsheeteditor/embed/js/ApplicationController.js
@@ -477,6 +477,10 @@ SSE.ApplicationController = new(function(){
                 message = me.errorLoadingFont;
                 break;
 
+            case Asc.c_oAscError.ID.KeyExpire:
+                message = me.errorTokenExpire;
+                break;
+
             default:
                 message = me.errorDefaultMessage.replace('%1', id);
                 break;
@@ -679,6 +683,7 @@ SSE.ApplicationController = new(function(){
         textGuest: 'Guest',
         textAnonymous: 'Anonymous',
         errorForceSave: "An error occurred while saving the file. Please use the 'Download as' option to save the file to your computer hard drive or try again later.",
-        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.'
+        errorLoadingFont: 'Fonts are not loaded.<br>Please contact your Document Server administrator.',
+        errorTokenExpire: 'The document security token has expired.<br>Please contact your Document Server administrator.'
     }
 })();
\ No newline at end of file
diff --git a/apps/spreadsheeteditor/embed/locale/en.json b/apps/spreadsheeteditor/embed/locale/en.json
index 730f84d67..424dca2fe 100644
--- a/apps/spreadsheeteditor/embed/locale/en.json
+++ b/apps/spreadsheeteditor/embed/locale/en.json
@@ -17,6 +17,7 @@
   "SSE.ApplicationController.errorLoadingFont": "Fonts are not loaded.<br>Please contact your Document Server administrator.",
   "SSE.ApplicationController.errorUpdateVersionOnDisconnect": "Internet connection has been restored, and the file version has been changed.<br>Before you can continue working, you need to download the file or copy its content to make sure nothing is lost, and then reload this page.",
   "SSE.ApplicationController.errorUserDrop": "The file cannot be accessed right now.",
+  "SSE.ApplicationController.errorTokenExpire": "The document security token has expired.<br>Please contact your Document Server administrator.",
   "SSE.ApplicationController.notcriticalErrorTitle": "Warning",
   "SSE.ApplicationController.scriptLoadError": "The connection is too slow, some of the components could not be loaded. Please reload the page.",
   "SSE.ApplicationController.textAnonymous": "Anonymous",