diff --git a/nerfstudio/viewer/server/subprocess.py b/nerfstudio/viewer/server/subprocess.py
index b50038561..17a4cdb7a 100644
--- a/nerfstudio/viewer/server/subprocess.py
+++ b/nerfstudio/viewer/server/subprocess.py
@@ -44,6 +44,7 @@ def is_port_open(port: int):
     """
     try:
         sock = socket.socket()
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         _ = sock.bind(("", port))
         sock.close()
         return True