diff --git a/homeassistant/components/upb/config_flow.py b/homeassistant/components/upb/config_flow.py
index 1db0b0b6fe3..40f49e57c60 100644
--- a/homeassistant/components/upb/config_flow.py
+++ b/homeassistant/components/upb/config_flow.py
@@ -39,12 +39,13 @@ async def _validate_input(data):
     url = _make_url_from_data(data)
 
     upb = upb_lib.UpbPim({"url": url, "UPStartExportFile": file_path})
+
+    upb.connect(_connected_callback)
+
     if not upb.config_ok:
         _LOGGER.error("Missing or invalid UPB file: %s", file_path)
         raise InvalidUpbFile
 
-    upb.connect(_connected_callback)
-
     with suppress(TimeoutError):
         async with asyncio.timeout(VALIDATE_TIMEOUT):
             await connected_event.wait()