diff --git a/products/ASC.Files/Server/Core/Thirdparty/Box/BoxProviderInfo.cs b/products/ASC.Files/Server/Core/Thirdparty/Box/BoxProviderInfo.cs
index bfb6912075..ef23278eb2 100644
--- a/products/ASC.Files/Server/Core/Thirdparty/Box/BoxProviderInfo.cs
+++ b/products/ASC.Files/Server/Core/Thirdparty/Box/BoxProviderInfo.cs
@@ -203,7 +203,10 @@ namespace ASC.Files.Thirdparty.Box
 
         public void Dispose()
         {
-            Storage.Close();
+            if (Storage != null)
+            {
+                Storage.Close();
+            }
         }
     }
 
diff --git a/products/ASC.Files/Server/Core/Thirdparty/OneDrive/OneDriveProviderInfo.cs b/products/ASC.Files/Server/Core/Thirdparty/OneDrive/OneDriveProviderInfo.cs
index dea82eb69c..9e704bd508 100644
--- a/products/ASC.Files/Server/Core/Thirdparty/OneDrive/OneDriveProviderInfo.cs
+++ b/products/ASC.Files/Server/Core/Thirdparty/OneDrive/OneDriveProviderInfo.cs
@@ -179,7 +179,10 @@ namespace ASC.Files.Thirdparty.OneDrive
 
         public void Dispose()
         {
-            Storage.Close();
+            if (Storage != null && Storage.IsOpened)
+            {
+                Storage.Close();
+            }
         }
     }
 
diff --git a/products/ASC.Files/Server/Core/Thirdparty/Sharpbox/SharpBoxProviderInfo.cs b/products/ASC.Files/Server/Core/Thirdparty/Sharpbox/SharpBoxProviderInfo.cs
index c98d8b7d5f..de89024cde 100644
--- a/products/ASC.Files/Server/Core/Thirdparty/Sharpbox/SharpBoxProviderInfo.cs
+++ b/products/ASC.Files/Server/Core/Thirdparty/Sharpbox/SharpBoxProviderInfo.cs
@@ -169,8 +169,10 @@ namespace ASC.Files.Thirdparty.Sharpbox
 
         public void Dispose()
         {
-            if (Storage.IsOpened)
+            if (Storage != null && Storage.IsOpened)
+            {
                 Storage.Close();
+            }
         }
     }