diff --git a/lightrag/llm/openai.py b/lightrag/llm/openai.py
index ae342657..54147311 100644
--- a/lightrag/llm/openai.py
+++ b/lightrag/llm/openai.py
@@ -352,7 +352,10 @@ async def openai_complete_if_cache(
 
                     # Check if choices exists and is not empty
                     if not hasattr(chunk, "choices") or not chunk.choices:
-                        logger.warning(f"Received chunk without choices: {chunk}")
+                        # Azure OpenAI sends content filter results in first chunk without choices
+                        logger.debug(
+                            f"Received chunk without choices (likely Azure content filter): {chunk}"
+                        )
                         continue
 
                     # Check if delta exists
@@ -817,6 +820,7 @@ async def azure_openai_complete_if_cache(
         api_version
         or os.getenv("AZURE_OPENAI_API_VERSION")
         or os.getenv("OPENAI_API_VERSION")
+        or "2024-08-01-preview"
     )
 
     # Call the unified implementation with Azure-specific parameters
@@ -930,6 +934,7 @@ async def azure_openai_embed(
         api_version
         or os.getenv("AZURE_EMBEDDING_API_VERSION")
         or os.getenv("OPENAI_API_VERSION")
+        or "2024-08-01-preview"
     )
 
     # CRITICAL: Call openai_embed.func (unwrapped) to avoid double decoration