A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi, 申玥
Thanks for your post in Microsoft Community.
I understand that you have encountered an error code 0x803D0005 when starting OneNote.
Could you please tell me what version of OneNote are you using, is OneNote application or OneNote for Windows 10?
If you are using OneNote for Windows 10, please right click Start Menu>Apps and Features, search OneNote>Advanced Options>Reset
If you have proxy, close it for temporary and check the issue.
You can also go Settings>Update & Security, check if there is any update available
Feel free to post back if you need further assistance.
Best Regards,
Silvia | Microsoft Community Support Specialist
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