Err Msg: Cannot Create This File When This File Already Exists

This article was previously published under Q127911
This article has been archived. It is offered "as is" and will no longer be updated.
When you attempt to establish trusts among a number of domains usingUser 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 thathas the same domain security identification (SID) information as anotherdomain that is already trusted, or has the same local Domain SID. Thisproblem occurs when you:

  • Rename a domain and the trust to the previous name is still in a trust relationship.
  • Split a single domain into two domains by simply renaming the domain on some backup domain controller (BDC) and promoting it to a primary domain controller (PDC). In this case both domains have the same Domain SID.
  • Create two domains through an automated process. For example, you install Windows NT once on a PDC and then performing a disk-to-disk copy to another identical computer, and then change the domain name.
To work around this problem:

  • If a domain is renamed and previous trust relationships still exist, break all trusts established by the previous domain, and re-create the trusts for the new domain.

  • Reinstall all domain controllers in one of the domains (consider using a smaller domain). After you re-install the domain controllers, change the security on all objects which give permissions to objects in that domain.
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 inthe Microsoft Knowledge Base as it becomes available.

A domain SID is generated during installation when you decide if you wantthe newly installed computer to be the PDC of a new domain. If there isno domain reachable on the network with that domain name, a new SID isgenerated. If you decide you want the computer to be a BDC, it browsesthe network for a PDC of a domain with that name and use that same domainSID. Once a SID is generated for a domain it does not change. This meansthat if you change a domain's name, it retains the same domain SID.

prodnt usrmgr

Article ID: 127911 - Last Review: 02/24/2014 08:19:20 - Revision: 2.1

Microsoft Windows NT Server 3.5, Microsoft Windows NT Server 3.51, Microsoft Windows NT Server 4.0 Standard Edition

  • kbnosurvey kbarchive KB127911