Hi, Thanks to share your post. For the issue, I think the followed link may give a proper hand: http://social.answers.microsoft.com/Forums/en-US/addonenote/thread/bf63e297-4094-42bb-ba34-e66b5c6ed1a2. Hope this could help you! Leo

Setup: - Sharepoint services 3.0 installed on server - Onenote 2010 installed on client machine - Shared notebook created on sharepoint from onenote 2010 What is working: - Opening the notebook from sharepoint works - Opening a single onenote file works - Syncing works Issue description: - From sharepoint site, opened version history page for a particular onenote document (in the document library where onenote files reside) - version 1.0, 2.0, etc, with date of that document is listed on sharepoint site - When clicked on a previous version of that document to open it, a progress bar indicating the opening of the file is shown, then the following error is displayed: 'onenote must be online to complete this operation'