I have what I think is called hybrid deployment. I have a local AD / Exchange 2010 setup with school employees having on premise Exchange accounts (~70 users). Then I Office365 with students who also have local AD account so they can login to domain joined laptops. I wanted to setup DirSync for two reasons. 1. To add the users on Office365 as contacts or mail enabled users on on premise GAL. 2. To sync passwords from local AD to Office365.
I did not have federation setup previously so this is the first sync attempt. The sync appeared to work except for one problem and I guess one confusion on my part. All the students already had Office365 accounts created and I just wanted to link them. The employees had nothing in Office365 previously. When I did the initial sync I had 6 users that gave me this error:
Unable to update this object because the following attributes associated with this object have values that may already be associated with another object in your local directory services: [UserPrincipalName User@site.org;]. Correct or remove the duplicate values in your local directory. Please refer to http://support.microsoft.com/kb/2647098 for more information on identifying objects with duplicate attribute values.
The link appears to be dead so if someone can point me to instructions on resolving this I would much appreciate. I can't find any duplicates but I may not be searching properly.
The confusion issue is that the sync appears to have created accounts for all my AD users in Office365 with an .onmicrosoft.com email address. I don't want to create acconts for all my on premise users though at Office365? Can I delete them, will they just come back? I guess I thought it would only sync those with correct UPN and not all users?
Thanks much for any guidance.