Import from OneNote

Support
1

Operating system

Windows

Joplin version

3.5.13

Desktop version info

3.5.13 (prod, win32)

What issue do you have?

I want to switch from OneNote to Joplin and am trying to import an Microsoft OneNote SIngle File package, but get the error: Cannot read properties of Null (reading 'toUpperCase'). I've read that it should be fixed soon but that's a long time ago and I'm still stuck on OneNote.
I can't send the bug report either ... or so it seems.

Can anyone tell me what to do?
Thanks
Peter

Screenshots

Screenshot Joplin 2026-05-05 102604.png
Screenshot Joplin 2026-05-05 102604.png372×140 5.02 KB

2

Please try the latest pre-release as it includes a lot of improvements for OneNote import:

3

Hi Laurent
Thanks for the advice, the import is running now. There is still an error though

Screenshot Joplin 2026-05-05 112028
Screenshot Joplin 2026-05-05 112028506×207 6.8 KB

I experience that the first line of text on one note page is missing. It's in OneNote, but I'm not sure how to check if it's in the export file from OneNote.

Peter

4

Hi

Sorry, wrong info.

I deleted Joplin and installed the new version. But the old notebook (the data) remains after delete and install.

5

The old notebooks can be deleted.

Are the notebooks importing correctly now?