diff --git a/apps/common/main/lib/util/docserviceworker.js b/apps/common/main/lib/util/docserviceworker.js
index dfad17a1ae..6b33f1ff66 100644
--- a/apps/common/main/lib/util/docserviceworker.js
+++ b/apps/common/main/lib/util/docserviceworker.js
@@ -10,7 +10,9 @@
             })
             .then(function (registrations) {
                 //delete stale service workers
-                for (const registration of registrations) {
+                // for (const registration of registrations) {
+                for (let r in registrations) {
+                    const registration = registrations[r];
                     if (registration !== reg && registration.active && registration.active.scriptURL.endsWith(serviceWorkerName)) {
                         registration.unregister();
                     }
diff --git a/apps/common/main/lib/util/htmlutils.js b/apps/common/main/lib/util/htmlutils.js
index fc72cf69d2..81228ce1bb 100644
--- a/apps/common/main/lib/util/htmlutils.js
+++ b/apps/common/main/lib/util/htmlutils.js
@@ -29,7 +29,6 @@
  * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
  *
  */
-const isIE = /msie|trident/i.test(navigator.userAgent);
 
 var checkLocalStorage = (function () {
     try {
diff --git a/apps/documenteditor/main/app.js b/apps/documenteditor/main/app.js
index b6295a2d14..5627c996ce 100644
--- a/apps/documenteditor/main/app.js
+++ b/apps/documenteditor/main/app.js
@@ -41,7 +41,7 @@ var reqerr;
 require.config({
     // The shim config allows us to configure dependencies for
     // scripts that do not call define() to register a module
-    baseUrl: '../../',
+    baseUrl: window.customBaseUrl || '../../',
     paths: {
         jquery          : '../vendor/jquery/jquery',
         underscore      : '../vendor/underscore/underscore',
diff --git a/apps/documenteditor/main/index.html.deploy b/apps/documenteditor/main/index.html.deploy
index 91db987dfc..4ce41d4e83 100644
--- a/apps/documenteditor/main/index.html.deploy
+++ b/apps/documenteditor/main/index.html.deploy
@@ -421,7 +421,7 @@
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
     <script src="../../../vendor/requirejs/require.js"></script>
     <script>
-        isIE === true ? require(['ie/app']) : require(['app']);
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
     </script>
 
     <link rel="stylesheet" href="../../../apps/documenteditor/main/resources/css/app.css" media="print" onload="this.media='all'">
diff --git a/apps/documenteditor/main/index_loader.html.deploy b/apps/documenteditor/main/index_loader.html.deploy
index 4e3af3cca3..fb8eef7471 100644
--- a/apps/documenteditor/main/index_loader.html.deploy
+++ b/apps/documenteditor/main/index_loader.html.deploy
@@ -331,7 +331,13 @@
     <div id="viewport"></div>
     <div class="inlined-svg"></div>
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        var userAgent = navigator.userAgent.toLowerCase(),
+            check = function(regex){ return regex.test(userAgent); },
+            isIEBrowser = !check(/opera/) && (check(/msie/) || check(/trident/));
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" type="text/css" href="../../../apps/documenteditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>
diff --git a/apps/pdfeditor/main/app.js b/apps/pdfeditor/main/app.js
index 9ff95990b5..067b8fcef3 100644
--- a/apps/pdfeditor/main/app.js
+++ b/apps/pdfeditor/main/app.js
@@ -41,7 +41,7 @@ var reqerr;
 require.config({
     // The shim config allows us to configure dependencies for
     // scripts that do not call define() to register a module
-    baseUrl: '../../',
+    baseUrl: window.customBaseUrl || '../../',
     paths: {
         jquery          : '../vendor/jquery/jquery',
         underscore      : '../vendor/underscore/underscore',
diff --git a/apps/pdfeditor/main/index.html.deploy b/apps/pdfeditor/main/index.html.deploy
index 3fa0161ea9..15030b5446 100644
--- a/apps/pdfeditor/main/index.html.deploy
+++ b/apps/pdfeditor/main/index.html.deploy
@@ -399,7 +399,8 @@
     <script>
         function startApp() {
             var script = document.createElement("script");
-            script.setAttribute("data-main", isIE === true ? "ie/app" : "app");
+            isIEBrowser === true && (window.customBaseUrl = '../../../');
+            script.setAttribute("data-main", isIEBrowser === true ? "ie/app" : "app");
             script.src = "../../../vendor/requirejs/require.js";
             document.body.appendChild(script);
         }
diff --git a/apps/pdfeditor/main/index_loader.html.deploy b/apps/pdfeditor/main/index_loader.html.deploy
index b6a2924637..127dbb1b99 100644
--- a/apps/pdfeditor/main/index_loader.html.deploy
+++ b/apps/pdfeditor/main/index_loader.html.deploy
@@ -331,7 +331,8 @@
     <script>
         function startApp() {
             var script = document.createElement("script");
-            script.setAttribute("data-main", "app");
+            isIEBrowser === true && (window.customBaseUrl = '../../../');
+            script.setAttribute("data-main", isIEBrowser === true ? "ie/app" : "app");
             script.src = "../../../vendor/requirejs/require.js";
             document.body.appendChild(script);
         }
diff --git a/apps/presentationeditor/main/app.js b/apps/presentationeditor/main/app.js
index 18a2841932..a01a3ca0a5 100644
--- a/apps/presentationeditor/main/app.js
+++ b/apps/presentationeditor/main/app.js
@@ -41,7 +41,7 @@ var reqerr;
 require.config({
     // The shim config allows us to configure dependencies for
     // scripts that do not call define() to register a module
-    baseUrl: '../../',
+    baseUrl: window.customBaseUrl || '../../',
     paths: {
         jquery          : '../vendor/jquery/jquery',
         underscore      : '../vendor/underscore/underscore',
diff --git a/apps/presentationeditor/main/index.html.deploy b/apps/presentationeditor/main/index.html.deploy
index a9162712f7..1569fa9a2f 100644
--- a/apps/presentationeditor/main/index.html.deploy
+++ b/apps/presentationeditor/main/index.html.deploy
@@ -439,7 +439,10 @@
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
     <script src="../../../vendor/requirejs/require.js"></script>
     <script>
-        isIE === true ? require(['ie/app']) : require(['app']);
+        var userAgent = navigator.userAgent.toLowerCase(),
+            check = function(regex){ return regex.test(userAgent); },
+            isIEBrowser = !check(/opera/) && (check(/msie/) || check(/trident/));
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
     </script>
 
     <link rel="stylesheet" href="../../../apps/presentationeditor/main/resources/css/app.css" media="print" onload="this.media='all'">
diff --git a/apps/presentationeditor/main/index_loader.html.deploy b/apps/presentationeditor/main/index_loader.html.deploy
index 29a2e860c6..9fb49ac421 100644
--- a/apps/presentationeditor/main/index_loader.html.deploy
+++ b/apps/presentationeditor/main/index_loader.html.deploy
@@ -329,7 +329,10 @@
     <div class="inlined-svg"></div>
 
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" href="../../../apps/presentationeditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>
diff --git a/apps/spreadsheeteditor/main/app.js b/apps/spreadsheeteditor/main/app.js
index 2d01621973..f62cadddde 100644
--- a/apps/spreadsheeteditor/main/app.js
+++ b/apps/spreadsheeteditor/main/app.js
@@ -41,7 +41,7 @@ var reqerr;
 require.config({
     // The shim config allows us to configure dependencies for
     // scripts that do not call define() to register a module
-    baseUrl: '../../',
+    baseUrl: window.customBaseUrl || '../../',
     paths: {
         jquery          : '../vendor/jquery/jquery',
         underscore      : '../vendor/underscore/underscore',
diff --git a/apps/spreadsheeteditor/main/index.html.deploy b/apps/spreadsheeteditor/main/index.html.deploy
index 1e7a84a4f7..0722af8bd0 100644
--- a/apps/spreadsheeteditor/main/index.html.deploy
+++ b/apps/spreadsheeteditor/main/index.html.deploy
@@ -463,7 +463,7 @@
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
     <script src="../../../vendor/requirejs/require.js"></script>
     <script>
-        isIE === true ? require(['ie/app']) : require(['app']);
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
     </script>
     <link rel="stylesheet" href="../../../apps/spreadsheeteditor/main/resources/css/app.css" media="print" onload="this.media='all'">    
 </body>
diff --git a/apps/spreadsheeteditor/main/index_internal.html.deploy b/apps/spreadsheeteditor/main/index_internal.html.deploy
index 50555025b1..b7cfd6b123 100644
--- a/apps/spreadsheeteditor/main/index_internal.html.deploy
+++ b/apps/spreadsheeteditor/main/index_internal.html.deploy
@@ -237,7 +237,13 @@
     <div class="inlined-svg"></div>
 
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        var userAgent = navigator.userAgent.toLowerCase(),
+            check = function(regex){ return regex.test(userAgent); },
+            isIEBrowser = !check(/opera/) && (check(/msie/) || check(/trident/));
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" href="../../../apps/spreadsheeteditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>
diff --git a/apps/spreadsheeteditor/main/index_loader.html.deploy b/apps/spreadsheeteditor/main/index_loader.html.deploy
index e045353ea7..b532452f57 100644
--- a/apps/spreadsheeteditor/main/index_loader.html.deploy
+++ b/apps/spreadsheeteditor/main/index_loader.html.deploy
@@ -331,7 +331,13 @@
     <div class="inlined-svg"></div>
 
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        var userAgent = navigator.userAgent.toLowerCase(),
+            check = function(regex){ return regex.test(userAgent); },
+            isIEBrowser = !check(/opera/) && (check(/msie/) || check(/trident/));
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" href="../../../apps/spreadsheeteditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>
diff --git a/apps/visioeditor/main/app.js b/apps/visioeditor/main/app.js
index 5213049f6c..ff827d7475 100644
--- a/apps/visioeditor/main/app.js
+++ b/apps/visioeditor/main/app.js
@@ -41,7 +41,7 @@ var reqerr;
 require.config({
     // The shim config allows us to configure dependencies for
     // scripts that do not call define() to register a module
-    baseUrl: '../../',
+    baseUrl: window.customBaseUrl || '../../',
     paths: {
         jquery          : '../vendor/jquery/jquery',
         underscore      : '../vendor/underscore/underscore',
diff --git a/apps/visioeditor/main/index.html.deploy b/apps/visioeditor/main/index.html.deploy
index f711736650..e5dc81b74c 100644
--- a/apps/visioeditor/main/index.html.deploy
+++ b/apps/visioeditor/main/index.html.deploy
@@ -436,7 +436,10 @@
     <inline src="../../common/main/resources/img/header/icons.svg" />
     <div class="inlined-svg"></div>
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" href="../../../apps/visioeditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>
diff --git a/apps/visioeditor/main/index_loader.html.deploy b/apps/visioeditor/main/index_loader.html.deploy
index 55012e70dc..669f840a10 100644
--- a/apps/visioeditor/main/index_loader.html.deploy
+++ b/apps/visioeditor/main/index_loader.html.deploy
@@ -324,7 +324,13 @@
     <div class="inlined-svg"></div>
 
     <script src="../../../../../../sdkjs/common/device_scale.js?__inline=true"></script>
-    <script data-main="app" src="../../../vendor/requirejs/require.js"></script>
+    <script src="../../../vendor/requirejs/require.js"></script>
+    <script>
+        var userAgent = navigator.userAgent.toLowerCase(),
+            check = function(regex){ return regex.test(userAgent); },
+            isIEBrowser = !check(/opera/) && (check(/msie/) || check(/trident/));
+        isIEBrowser === true ? (window.customBaseUrl = '../../../', require(['ie/app'])) : require(['app']);
+    </script>
 
     <link rel="stylesheet" href="../../../apps/visioeditor/main/resources/css/app.css" media="print" onload="this.media='all'">
 </body>