Article ID: 127911 - View products that this article applies to.
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When you attempt to establish trusts among a number of domains using User Manager for Domains, the following error message appears:
Cannot create this file when this file already exists
This problem occurs when you attempt establish a trust with a domain that has the same domain security identification (SID) information as another domain that is already trusted, or has the same local Domain SID. This problem occurs when you:
To work around this problem:
Microsoft has confirmed this to be a problem in Windows NT version 3.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
A domain SID is generated during installation when you decide if you want the newly installed computer to be the PDC of a new domain. If there is no domain reachable on the network with that domain name, a new SID is generated. If you decide you want the computer to be a BDC, it browses the network for a PDC of a domain with that name and use that same domain SID. Once a SID is generated for a domain it does not change. This means that if you change a domain's name, it retains the same domain SID.