diff --git a/modal/_output.py b/modal/_output.py
index dd901b417..a7c6e7c89 100644
--- a/modal/_output.py
+++ b/modal/_output.py
@@ -462,18 +462,21 @@ def progress(
         reset: Optional[bool] = False,
         complete: Optional[bool] = False,
     ) -> Optional[TaskID]:
-        if task_id is not None:
-            if reset:
-                return self._reset_sub_task(task_id)
+        try:
+            if task_id is not None:
+                if reset:
+                    return self._reset_sub_task(task_id)
+                elif complete:
+                    return self._complete_sub_task(task_id)
+                elif advance is not None:
+                    return self._advance_sub_task(task_id, advance)
+            elif name is not None and size is not None:
+                return self._add_sub_task(name, size)
             elif complete:
-                return self._complete_sub_task(task_id)
-            elif advance is not None:
-                return self._advance_sub_task(task_id, advance)
-        elif name is not None and size is not None:
-            return self._add_sub_task(name, size)
-        elif complete:
-            return self._complete_progress()
-
+                return self._complete_progress()
+        except Exception as exc:
+            # Liberal exception handling to avoid crashing downloads and uploads.
+            logger.error(f"failed progress update: {exc}")
         raise NotImplementedError(
             "Unknown action to take with args: "
             + f"name={name} "
diff --git a/modal/_utils/blob_utils.py b/modal/_utils/blob_utils.py
index 0c02f46f6..ad6bd6874 100644
--- a/modal/_utils/blob_utils.py
+++ b/modal/_utils/blob_utils.py
@@ -114,8 +114,6 @@ async def safe_read():
             await writer.write(chunk)
             self.progress_report_cb(advance=len(chunk))
 
-        self.progress_report_cb(complete=True)
-
     def remaining_bytes(self):
         return self.segment_length - self.num_bytes_read
 
@@ -282,6 +280,9 @@ async def _blob_upload(
             content_md5_b64=upload_hashes.md5_base64,
         )
 
+    if progress_report_cb:
+        progress_report_cb(complete=True)
+
     return blob_id