diff --git a/src/app/shared/publication/upload/upload-streaming.service.ts b/src/app/shared/publication/upload/upload-streaming.service.ts
index 99698bb29..555741778 100644
--- a/src/app/shared/publication/upload/upload-streaming.service.ts
+++ b/src/app/shared/publication/upload/upload-streaming.service.ts
@@ -75,20 +75,36 @@ class UploadFileUseCase {
 
         if(needUpload) {
 
-          const request = readAndUploadChunk(index).then(async(uploadRequest) => {
+          // upload every chunk at onces
+          // const request = readAndUploadChunk(index).then(async(uploadRequest) => {
 
-            if(uploadRequest.isErr()) {
-              connection = false
-              const pingRequest = await this.CMAPIService.ping()
-              if( pingRequest.isErr()) {
-                errorMessage = UploadError.noConnection
-              } else {
-                errorMessage = UploadError.slow
-              }
-            }
+          //   if(uploadRequest.isErr()) {
+          //     connection = false
+          //     const pingRequest = await this.CMAPIService.ping()
+          //     if( pingRequest.isErr()) {
+          //       errorMessage = UploadError.noConnection
+          //     } else {
+          //       errorMessage = UploadError.slow
+          //     }
+          //   }
 
-          })
+          // })
+          // allRequest.push(request)
+
+          // one by one chunk upload
+          const request = readAndUploadChunk(index)
           allRequest.push(request)
+          const uploadRequest = await request
+
+          if(uploadRequest.isErr()) {
+            const pingRequest = await this.CMAPIService.ping()
+            if( pingRequest.isErr()) {
+              return resolve(err(UploadError.noConnection))
+            } else {
+              return resolve(err(UploadError.slow))
+            }
+          }
+
         }
       }