A Microsoft file hosting and synchronization service.
Hello, Koco.
Welcome to Microsoft community.
Thank you very much for your description of the problem.
What I want to explain to you is that the problem you described above that OneDrive shared folders appear as "direct internet access" is a hot issue that has occurred recently. We have received feedback from users from all over the world who have encountered this problem. The issue is still in the investigation and remediation. OneDrive development team apologize for the inconvenience caused by this issue.
The details of this issue are explained in their support article-<Add and sync shared folders to OneDrive for home - Microsoft Support>
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Since the Microsoft community is just a community for technical discussions, I can't participate in development-related content, but I will continue to track the issue for you in this reply thread and share the latest progress on the issue with you as soon as possible.
At the same time, I found the last channel for users to submit reports and feedback on this issue opened by the OneDrive team
You can provide feedback in the following link to send feedback: OneDrive · Community (microsoft.com)
You can also open the OneDrive mobile app, shake it, and click Report to send it. You can take a screenshot of the issue you encountered and provide a detailed description to the OneDrive engineering team (or you can also send feedback about the issue via the OneDrive link (live.com)English only
So that they can bring together different manifestations of the problem encountered in order to fully understand the full picture of the problem and provide a more complete solution. Apologize again for the inconvenience caused by this issue
▲ I will continue to track the issue for you in this reply thread and share the latest progress on the issue with you as soon as possible.While you wait for the fix, you can temporarily visit OneDrive Web as an alternative.
Thank you very much for your understanding🙂
Best Regards,
Hannah.Z- MSFT |Microsoft Community Support Specialist