ChromaDB upsert silently exits on Windows Server #6052
Description
I am facing a strange issue while working on a very simple RAG test setup.
The code only:
Creates static test documents
Generates embeddings using AvalAI (OpenAI-compatible API)
Stores them in ChromaDB using upsert
✅ Works perfectly on my local machine (Windows / dev PC) ❌ Fails silently on Windows Server (VPS)
On the server, when execution reaches collection.upsert(...), the process immediately exits without any error, exception, or log.
Environment Details
Local (Working):
OS: Windows (Desktop)
Python: Same version as server
RAM: 16GB
Server (Failing):
OS: Windows Server
RAM tested: 4GB ❌ → 32GB ❌ (same issue)
VPS environment
This confirms the issue is not related to memory limits.
`import chromadb
from openai import OpenAI
client = OpenAI(
base_url="xxxxxxxxxxx",
api_key="xxxxxxxxxxxxxxx"
)
docs = ["test1", "test2"]
emb = client.embeddings.create(
model="text-embedding-3-small",
input=docs
).data
embeddings = [e.embedding for e in emb]
chroma = chromadb.Client()
col = chroma.get_or_create_collection(
name="test",
embedding_function=None
)
print("Before upsert")
col.upsert(
ids=["1", "2"],
documents=docs,
embeddings=embeddings
)
print("After upsert ✅")`
After enabling logging/fault handler, I got a fatal access violation:
Windows fatal exception: access violationaccess violation
Thread 0x00001dbc ...
File "chromadb\api\rust.py", line 498 in _upsert
File "chromadb\api\models\Collection.py", line 460 in upsert
File "main.py", line 26