Microsoft Teams client OneNote tab shows no content

I think you need to provide more information. Noting that - Teams Desktop app OneNote tab shows content - OneNote in browser doesn't show any - nor does OneNote application First things that come to mind - did you open the browser version via "earth/globe" -button in Teams OneNote tab? - did you open the desktop OneNote from Teams OneNote" tab "open in desktop application If Teams OneNote has content and the others don't: it feels like there are two different OneNote Notebooks - or you might be looking different section/pages? I don't think OneNote inside Teams is caching the content a lot --> it syncs it to the cloud.