diff --git a/ONLYOFFICE/Layouts/Onlyoffice/CallbackHandler.ashx.cs b/ONLYOFFICE/Layouts/Onlyoffice/CallbackHandler.ashx.cs
index 7c0bd70..bca8daa 100644
--- a/ONLYOFFICE/Layouts/Onlyoffice/CallbackHandler.ashx.cs
+++ b/ONLYOFFICE/Layouts/Onlyoffice/CallbackHandler.ashx.cs
@@ -50,8 +50,8 @@ public void ProcessRequest(HttpContext context)
                     SPListItemId = "",
                     SPListURLDir = "",
                     Folder = "",
-                    url = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority;
-
+                    url = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority +
+                                                                                                            HttpContext.Current.Request.RawUrl.Substring(0, HttpContext.Current.Request.RawUrl.IndexOf("_layouts"));
             //get secret key
             SPSecurity.RunWithElevatedPrivileges(delegate()
             {
diff --git a/ONLYOFFICE/Layouts/Onlyoffice/Settings.aspx.cs b/ONLYOFFICE/Layouts/Onlyoffice/Settings.aspx.cs
index 4537cdb..35328cf 100644
--- a/ONLYOFFICE/Layouts/Onlyoffice/Settings.aspx.cs
+++ b/ONLYOFFICE/Layouts/Onlyoffice/Settings.aspx.cs
@@ -36,8 +36,8 @@ namespace Onlyoffice.Layouts
     public partial class Settings : LayoutsPageBase
     {
         protected string path = AppDomain.CurrentDomain.BaseDirectory;
-        protected string url = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority;
-
+        protected string url = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority +
+                                                                                                            HttpContext.Current.Request.RawUrl.Substring(0, HttpContext.Current.Request.RawUrl.IndexOf("_layouts"));
         protected void Page_Load(object sender, EventArgs e)
         {
             DocumentServerTitle.Text = Microsoft.SharePoint.Utilities.SPUtility.GetLocalizedString("$Resources:Resource,DocumentServer", "core", (uint)SPContext.Current.Web.UICulture.LCID);
diff --git a/ONLYOFFICE/Layouts/Onlyoffice/editorPage.aspx.cs b/ONLYOFFICE/Layouts/Onlyoffice/editorPage.aspx.cs
index 7bb7dc7..f64d3ef 100644
--- a/ONLYOFFICE/Layouts/Onlyoffice/editorPage.aspx.cs
+++ b/ONLYOFFICE/Layouts/Onlyoffice/editorPage.aspx.cs
@@ -61,9 +61,9 @@ public partial class editorPage : LayoutsPageBase
                          CurrentUserLogin = "",
                          SPListItemId, SPListURLDir, SPSource, SPListId, Folder, Secret,
                          DocumentSeverHost = "@http://localhost",
-                         host = HttpContext.Current.Request.Url.Host,
-                         SPUrl = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority,
-
+                         host = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority,
+                         SPUrl = HttpUtility.HtmlEncode(HttpContext.Current.Request.Url.Scheme) + "://" + HttpContext.Current.Request.Url.Authority +
+                                                                                                            HttpContext.Current.Request.RawUrl.Substring(0, HttpContext.Current.Request.RawUrl.IndexOf("_layouts")),
                          SPVersion = SPFarm.Local.BuildVersion.Major == 14 ? "": "15/";
 
         protected int CurrentUserId = 0;
@@ -167,7 +167,7 @@ protected void Page_Load(object sender, EventArgs e)
 
                                 Folder = Path.GetDirectoryName(file.ServerRelativeUrl);
                                 Folder = Folder.Replace("\\", "/");
-                                GoToBack = SPUrl + Folder;
+                                GoToBack = host + Folder;
 
                                 FileAuthor = file.Author.Name;
 
diff --git a/ONLYOFFICE/MenuAction/Elements.xml b/ONLYOFFICE/MenuAction/Elements.xml
index 5135642..03636c3 100644
--- a/ONLYOFFICE/MenuAction/Elements.xml
+++ b/ONLYOFFICE/MenuAction/Elements.xml
@@ -12,7 +12,14 @@
     Start the URL with the token ~remoteAppUrl if the page is in the
     associated web project, use ~appWebUrl if page is in the app project.
     -->
-    <UrlAction Url="javascript:window.open(_spPageContextInfo.webServerRelativeUrl + '_layouts/Onlyoffice/editorPage.aspx?SPListItemId={ItemId}&amp;SPListURLDir={ListUrlDir}&amp;action=track')" />
+    <UrlAction Url="javascript:
+               var url = '';
+               if(_spPageContextInfo.webServerRelativeUrl.substr(_spPageContextInfo.webServerRelativeUrl.length - 1) != '/')
+                   url = _spPageContextInfo.webServerRelativeUrl + '/';
+               else
+                   url = _spPageContextInfo.webServerRelativeUrl;
+               window.open(url + '_layouts/Onlyoffice/editorPage.aspx?SPListItemId={ItemId}&amp;SPListURLDir={ListUrlDir}&amp;action=track');
+               " />
     
   </CustomAction>                                                     
 </Elements>
\ No newline at end of file
diff --git a/ONLYOFFICE/RibbonAction/Elements.xml b/ONLYOFFICE/RibbonAction/Elements.xml
index 8ba4d60..47be808 100644
--- a/ONLYOFFICE/RibbonAction/Elements.xml
+++ b/ONLYOFFICE/RibbonAction/Elements.xml
@@ -27,7 +27,17 @@
       </CommandUIDefinitions>
       <CommandUIHandlers>
         <CommandUIHandler Command="Invoke_RibbonAction"
-                          CommandAction="javascript:window.open(_spPageContextInfo.webServerRelativeUrl + '_layouts/Onlyoffice/editorPage.aspx?SPListItemId={SelectedItemId}&amp;SPListId={SelectedListId}&amp;SPSource={Source}&amp;SPListURLDir={ListUrlDir}&amp;action=download')"
+                          CommandAction="javascript:
+                          var url = '', listUrl = '';
+                          if(_spPageContextInfo.webServerRelativeUrl.substr(_spPageContextInfo.webServerRelativeUrl.length - 1) != '/'){
+                             url = _spPageContextInfo.webServerRelativeUrl + '/'; //if subsite
+                             listUrl = _spPageContextInfo.webServerRelativeUrl + '/';
+                          } 
+                          else{
+                             url = _spPageContextInfo.webServerRelativeUrl;
+                          }
+                          window.open(url + '_layouts/Onlyoffice/editorPage.aspx?SPListItemId={SelectedItemId}&amp;SPListId={SelectedListId}&amp;SPSource={Source}&amp;SPListURLDir='+escape(listUrl)+'{ListUrlDir}&amp;action=download');
+                          "
                           EnabledScript="javascript:
                               function enableONLYOFFICEButton() {
                                   var items = SP.ListOperation.Selection.getSelectedItems();
diff --git a/ONLYOFFICE/SettingAction/Elements.xml b/ONLYOFFICE/SettingAction/Elements.xml
index 47560fe..3b0aaf9 100644
--- a/ONLYOFFICE/SettingAction/Elements.xml
+++ b/ONLYOFFICE/SettingAction/Elements.xml
@@ -6,6 +6,6 @@
                 Sequence="1000" 
                 Title="$Resources:Resource,Settings"
                 Rights="ManageWeb">
-    <UrlAction Url="/_layouts/Onlyoffice/Settings.aspx"/>
+    <UrlAction Url="~site/_layouts/Onlyoffice/Settings.aspx"/>
     </CustomAction>
 </Elements>
\ No newline at end of file