When using vectorstores.list via the API, or even using the OpenAI portal, I get a 404 error. “Vector store not found”. You can see this in the screenshot. This works fine on our primary project and one of our secondary projects. But it doesn’t work on another one of our secondary projects. Y…

Hi! This looks like a small platform bug. When you open a vector store in storage or vector stores, the browser URL updates with its ID. If you then switch to a different project, the URL still points to the old vector store ID, which triggers a “vector store not found” error. Clicking any vector…

Misunderstanding, and it symptom: Vector stores are supposed to be newly-scoped to a project. Is what is seen and then commented on true? UI trace, with default project: Clicking: dashboard, storage, vector stores. Result: listing is loaded, the first list item is highlighted, written to the URL,…

Resources are scoped to the projects where they were created, and only admin members can access them from outside that project. Source: Can resources be shared across projects? Project resources (such as files, assistants, storage, or threads) are scoped to the project and cannot be accessed fro…

There is, indeed, a bug where the URL keeps the vector store from one project as you switch projects. But if I switch to “Files”, I can see all of the files for that project. But if I then toggle to “Vector stores”, it take about 30 seconds and then I get that “unexpected error occurred: Vector …

Saturday bug hunt? Why not. :slight_smile: But, I can barely reproduce the issue right now, so a fix may already be rolling out. When I switch projects the URL updates as expected and the first vector store loads with the correct URL. Because of this, I cannot recreate the behavior you described. …

Still the same. I have 3 projects. Two of them work and the third does not – neither in the UI nor via API. I am the owner of the whole thing so there’s no permissions issue. I’d guess that you can’t reproduce because there’s something messed up about my third project. I think we need OpenAI su…

Mod will note that a project that cannot have its vector stores listed in the platform site, nor by API call unless using a small API limit parameter or a different sort that avoids a corrupted list item, is exactly what I flagged for escalation earlier, and said, “can only get worse”…

@kduffie A few bugfixes have been rolled out since this topic has been created. Do you still have this issue? [image] OpenAI Dashboard - Storage -> Vector Store Error API Hey Community Members, Apologies for the inconvenience. We believe this issue should no…

Just tested again in your portal. Still the same problems. First, we are unable to list vector stores on one of my 3 projects. Second, if you switch projects, you’ll get an error because it is still trying to find the selected vector store from the original project when you switch to the second p…

I can confirm this bug with the API as well – a GET request to /v1/vector_stores returns 404 with payload { "error": { "message": "Vector store not found", "type": "invalid_request_error", "param": null, "code": null } } most of the time (about 90% of all requests). The API ke…

Vectorstores.list with second project returns 404

API Bugs

VeitB December 1, 2025, 4:14pm 10

@kduffie

A few bugfixes have been rolled out since this topic has been created.
Do you still have this issue?

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An unexpected error occurred: Vector store not found API vector-store	11	560	December 5, 2025
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Vectorstores.list with second project returns 404

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