Onenote api return error NotFound with code 20350

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Onenote api return error NotFound with code 20350

Dorian Pham 0

Hi Team,
I meet an error when open a PLC Notebook tab on a EDU Teams Channel. My case is create a team from EDU template by API, and manually create Notebook data for it.
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Check the API, I see the it return error Not Found and error code 20350. I looking for error code in https://learn.microsoft.com/en-us/graph/onenote-error-codes but there no result for code 20350.
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Could you help find the issue, and the code 20350 mean.
Thanks

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Answer 1

Dear @Dorian Pham

Thank you for posting your question in the Microsoft Q&A forum. I understand you're encountering an error with code 2035 (or similar codes like 0-1018, 17003, 2031) during the installation of Office, and you’ve identified this code in the referenced support documentation.

Based on the article “Another installation is in progress” or error code 0-1018, 17003, 2031, or 2035, this error typically occurs when:

Another Office installation, update, or repair is already running in the background.
The system is still processing a previous Office-related task, which blocks new installations.
For detailed guidance, you can refer to Microsoft’s official support article:"...Another installation is in progress..." or error code 0-1018, 17003-2031, or 2035-0 w…

Recommended steps to resolve:

Check for active installations:
- Open Task Manager and look for any running Office-related processes.
- If found, wait for them to complete or end the task if it's stuck.
Restart your device:
- A simple restart often clears pending installation tasks.
Use the Office Installer again:
- After restarting, try running the Office setup again.
Use the Support and Recovery Assistant (SaRA):
- Microsoft provides a tool to diagnose and fix installation issues:
  Download Enterprise Version of Microsoft Support and Recovery Assistant from Official Microsoft Dow…

If the issue persists after following these steps, please let me know. I’ll be happy to assist further or escalate the case if needed.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread. User's image

Dorian Pham 0 Reputation points

2025-09-18T06:53:46.78+00:00

Sorry, I'm not installing Office, it is Microsoft Teams web application.
Sophie N 8,095 Reputation points Microsoft External Staff Moderator

2025-09-24T03:56:39.69+00:00

Dear @Dorian Pham

Thank you for the detailed information. Error code 20350, "Cannot determine notebook type," occurs when the OneNote API cannot recognize the notebook as a specific EDU type (PLC, Class, or Staff). This typically happens when a notebook is created manually or via a script instead of through the dedicated EDU provisioning service, which stamps the notebook with necessary metadata.

The fastest solution is to re-create the notebook using the official EDU path within Teams, which will apply the correct structure and identity.

Immediate Solution to Fix the Tab

In your Teams channel, remove the current "PLC Notebook" tab.

Click the '+' to add a new tab and select the "Class Notebook" app (it also handles PLC notebooks).

In the setup wizard, choose "Create a new notebook" (or equivalent for PLC) to let the system provision it correctly.

Once the new notebook is created, you can manually copy your existing content from the old notebook into the new one via OneNote on the web.

This process ensures the notebook is correctly identified as a PLC notebook, resolving the 20350 error.

For Future Automation

To prevent this in the future, when creating Teams via API, use the Education API endpoints (e.g., POST https://graph.microsoft.com/v1.0/education/classes) to create the class/PLC group. This method automatically provisions a correctly stamped EDU notebook. Avoid creating the notebook content manually after team creation.

For more on the Education API, please see: Education API overview - Microsoft Graph | Microsoft Learn

I hope this resolves the issue. If the problem persists after trying these steps, please let us know.

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Onenote api return error NotFound with code 20350

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