diff --git a/LearningHub.Nhs.WebUI/Services/FileService.cs b/LearningHub.Nhs.WebUI/Services/FileService.cs
index a55433c9f..e0d19d7f2 100644
--- a/LearningHub.Nhs.WebUI/Services/FileService.cs
+++ b/LearningHub.Nhs.WebUI/Services/FileService.cs
@@ -145,14 +145,26 @@ public async Task<FileDownloadResponse> DownloadFileAsync(string filePath, strin
 
             try
             {
-                // Directly download the entire file as a stream
-                var response = await file.DownloadAsync();
-                return new FileDownloadResponse
+                if (fileSize <= 900 * 1024 * 1024)
                 {
-                    Content = response.Value.Content,
-                    ContentType = properties.Value.ContentType,
-                    ContentLength = fileSize,
-                };
+                    // Directly download the entire file as a stream
+                    var response = await file.DownloadAsync();
+                    return new FileDownloadResponse
+                    {
+                        Content = response.Value.Content,
+                        ContentType = properties.Value.ContentType,
+                        ContentLength = fileSize,
+                    };
+                }
+                else
+                {
+                    return new FileDownloadResponse
+                    {
+                        Content = await file.OpenReadAsync(),
+                        ContentType = properties.Value.ContentType,
+                        ContentLength = fileSize,
+                    };
+                }
             }
             catch (Exception ex)
             {