I have to migrate users from a forest into our current forest, and they both have the same netbios name. So when I tried to put in an external AD trust, it failed because of the similar names. Would I be able to use ADFS to do this, even though they are called the same netbios name?

How would it know to go to the other forest?Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

This forum is for the issues on the exchange product, for the question about ADFS please use the “Directory Services” forum which would be the best place for seeking the advicePlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.