Ask the Expert

How do we save our SIDs in a new Windows 2003/Exchange 2003 installation?

We are migrating our domain controller to a Windows 2003 server by performing a new installation. That means we are going to lose all user SIDs. If I install Exchange 2003 on the domain controller, how do I connect the old Exchange 2000 database to the new Exchange 2003 server, since those SIDs will be changed? Is there any tool that can resolve this?

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If you are talking about a brand new forest, then you can associate the old mailboxes to the new forest and SIDs through the associated external account access available through Microsoft Exchange.

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This was first published in November 2005

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