From a4138a89ee123f293477dffe4ab0f177ebb6ba7b Mon Sep 17 00:00:00 2001
From: Akhil Narayanan <20665294+akhilnarayanan1@users.noreply.github.com>
Date: Wed, 7 Jan 2026 21:52:02 +0530
Subject: [PATCH] Ignore Windows stderr flush errors (#2462)

---
 comfyui_manager/prestartup_script.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/comfyui_manager/prestartup_script.py b/comfyui_manager/prestartup_script.py
index 29ce42bb..3f3cbfe9 100644
--- a/comfyui_manager/prestartup_script.py
+++ b/comfyui_manager/prestartup_script.py
@@ -340,10 +340,13 @@ try:
                 pass
 
             with std_log_lock:
-                if self.is_stdout:
-                    original_stdout.flush()
-                else:
-                    original_stderr.flush()
+                try:
+                    if self.is_stdout:
+                        original_stdout.flush()
+                    else:
+                        original_stderr.flush()
+                except (OSError, ValueError):
+                    pass
 
         def close(self):
             self.flush()