diff --git a/Hcs.WebApp/Components/Dialogs/StartParsing.razor b/Hcs.WebApp/Components/Dialogs/StartParsing.razor
index 85a8f1e..dab36c3 100644
--- a/Hcs.WebApp/Components/Dialogs/StartParsing.razor
+++ b/Hcs.WebApp/Components/Dialogs/StartParsing.razor
@@ -22,9 +22,9 @@
     <RadzenAlert Visible="@hasError" AlertStyle="AlertStyle.Danger" Variant="Variant.Flat" Shade="Shade.Lighter" AllowClose="false">
         @errorMessage
     </RadzenAlert>
-    <RadzenUpload id="uploadWithDragAndDrop" @ref="upload" Url="upload/parsing" Progress="@OnProgress" Complete="@OnCompleteAsync" ChooseText="Перетащите сюда или нажмите, чтобы выбрать файл" Accept=".xlsx" Auto="false" Multiple="false" Style="width: 100%;" />
+    <RadzenUpload id="uploadWithDragAndDrop" @ref="upload" Url="upload/parsing" Progress="@OnProgress" Complete="@OnCompleteAsync" Error="@OnError" Change="@OnChange" ChooseText="Перетащите сюда или нажмите, чтобы выбрать файл" Accept=".xlsx" Auto="false" Multiple="false" Style="width: 100%;" />
     <RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" JustifyContent="JustifyContent.End" Gap="0.5rem">
-        <RadzenButton Click="@Upload" Visible="@(state == UploadState.Idle)" Text="Отправить" />
+        <RadzenButton Click="@Upload" Visible="@(state == UploadState.Idle)" Disabled="@fileNotSelected" Text="Отправить" />
         <RadzenButton Click="@Close" Visible="@(state == UploadState.Idle)" ButtonStyle="ButtonStyle.Light" Text="Отмена" />
     </RadzenStack>
     <RadzenProgressBar Value="@progress" Visible="@(state != UploadState.Idle)" />
@@ -41,6 +41,7 @@
 
     RadzenUpload upload;
     UploadState state;
+    bool fileNotSelected = true;
     int progress;
     bool hasError;
     string errorMessage;
@@ -83,8 +84,25 @@
         {
             hasError = true;
             errorMessage = e.Message;
+
+            upload.ClearFiles();
         }
 
         state = hasError ? UploadState.Idle : UploadState.Completed;
     }
+
+    void OnError(UploadErrorEventArgs args)
+    {
+        hasError = true;
+        errorMessage = args.Message;
+
+        upload.ClearFiles();
+
+        state = UploadState.Idle;
+    }
+
+    void OnChange(UploadChangeEventArgs args)
+    {
+        fileNotSelected = args.Files.Count() <= 0;
+    }
 }
diff --git a/Hcs.WebApp/Components/Shared/SyncedPageBase.cs b/Hcs.WebApp/Components/Shared/SyncedPageBase.cs
index b9d042c..a829dcf 100644
--- a/Hcs.WebApp/Components/Shared/SyncedPageBase.cs
+++ b/Hcs.WebApp/Components/Shared/SyncedPageBase.cs
@@ -113,14 +113,14 @@ namespace Hcs.WebApp.Components.Shared
                 var fileToParseId = -1;
                 if (dialogResult != null && int.TryParse(dialogResult, out fileToParseId))
                 {
+                    ChangeState(SyncedPageState.SyncWaiting);
+
                     // TODO: Use user id
                     var campaign = await HeadquartersService.InitiateCampaignAsync(CampaignType, "", new CampaignParseArgs()
                     {
                         FileToParseId = fileToParseId
                     });
                     CampaignManagementState.EnqueueCampaign(campaign);
-
-                    ChangeState(SyncedPageState.SyncWaiting);
                 }
             }
         }