Comments (3)

  1. Anonymous says:

    I found the same problem in SharePoint 2010, and this article saved me countless hours of troubleshooting. Thank you.

  2. Valdis Thomann says:

    I got this error while setting up UPS sync on a SharePoint 2013 farm. Can confirm that changing the forest name from FQDN to NetBIOS fixed the problem.

    Thanks for saving me time!

  3. Ismail Sokolaj says:

    You also need to ensure that the AD account you are using has "Replicating Directory Changes" on the AD forest you are trying to create a connection for. This you would normally do anyway but worth keeping in mind especially when you sync multiple forests.

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