Hi @Hulayla Al Sulayyim ,
Did you mean you share the OneNote for users?
Did all users in the same organization?
How did you add the users?
I suggest you refer to this support article about sharing in OneNote:
https://support.microsoft.com/en-us/office/share-a-page-of-notes-or-an-entire-notebook-from-onenote-for-windows-10-d4a74a14-44a3-411e-8fb5-06e73ddf047f
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