[Bug] OneDrive ListRootFolder returns 502 BadGateway from API Hub

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#45 opened on May 15, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 38/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Quiet
Tech stack: azure, csharp
Domain: api, authentication, backend, cloud

Research direction

Start by reproducing GET /api/onedrive/root and trace ListRootFolderAsync() to the /datasets/default/folders call. Compare that path with GetFilesFromFolderAsync() and inspect the MSI-authenticated connection for the reported API Hub 502. Done means identifying whether the failure is in the selected API, MSI connection configuration, or API Hub, with a verified working path or documented blocker.

Written by the indexing model from the issue text.

Description

Summary

The onedrive/root endpoint consistently returns 502 BadGateway from the API Hub, both locally and in Azure deployment.

Repro

GET https://sdk-connector-samples.azurewebsites.net/api/onedrive/root

Error

The connector calls GET /datasets/default/folders which returns 502 from the API Hub gateway (source: 0a8e3a9fa83240839c163637de5e83f0.08.common.logic-df.azure-apihub.net, innerError status 500).

Questions to investigate

Is ListRootFolderAsync() the right API - or should GetFilesFromFolderAsync() be used instead?
Does /datasets/default/folders work with MSI-authenticated connections?
Is this a transient API Hub issue or a connection configuration problem?

Connection details

Namespace: sdk-test-gateway (nsUrlId: 0a8e3a9fa83240839c163637de5e83f0)
Connection: onedriveforbusiness-test
MSI ACL: granted (objectId d77681c2-bb7f-4b90-ba93-2b9cee96cbae)

Dominant language: C#
Stars: 3
Forks: 3
Avg merge: 1h 8m
Merged PRs (30d): 2

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