We consistently get an error in OneNote client when trying to sync the local OneNote files to the ones that are Sharepoint. The Sharepoint OneNote files are in a special Sharepoint OneNote library, created with the right default template. Versioning, etc. are all off for the general Sharepoint folder settings (per advice in a number of placed in this and other forums.) After we create the initial version of OneNote files on Sharepoint (and everything initially looks OK with an initial look both in the browser and in a OneNote client), we start getting errors in syncing (Error code: 0xE401064C) in the OneNote client itself and no updates propagate from the OneNote client to the Sharepoint Site. The error says we cannot open for editing. Any thoughts/Ideas? Lance

See if either one of these help: http://social.technet.microsoft.com/Forums/en/sharepointgeneral/thread/b6f80ea5-84c0-484a-8919-1a88f7030dc4 http://social.technet.microsoft.com/Forums/en-US/sharepoint2010general/thread/df1ab0ca-428c-4e5d-9ac3-e67baefc6277

I have exactly the same issue with SP2010 and Onote 2010. The sync work with another SP2007 server but not with the SP2010. The 2 above links did not provide any solution to me. I am currently investigating if the lack of "Office Web apps" on the SP2010 is not simply the cause.