Microsoft KB Archive/931751

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The installation fails, and you receive several error messages when you try to reinstall Exchange Server 2007

Article ID: 931751

Article Last Modified on 5/10/2007


  • Microsoft Exchange Server 2007 Enterprise Edition
  • Microsoft Exchange Server 2007 Standard Edition


When you try to reinstall Microsoft Exchange Server 2007 after you removed Exchange Server 2007, the installation fails.

Additionally, the Exsetup.log file contains error messages that resemble the following error messages:

[18:52:52] Checking org prereqs...
[18:52:52] Executing [test-systemhealth ScanType:'PrecheckInstall' Role:'Global']...
[18:56:21] Command execution was successful.
[18:56:21] Executing [Install-ExchangeOrganization]...
[18:59:43] An exception was reported: System.Management.Automation.CmdletInvocationException: Unknown error (0x80005000) ---> System.DirectoryServices.ActiveDirectory.ActiveDirectoryOperationException: Unknown error (0x80005000) ---> System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)


This issue occurs when you remove Exchange Server 2007 and manually remove the Exchange Server 2007 groups from the Active Directory directory service. In this case, some of the GUID information from these Exchange Server 2007 groups remains in Active Directory.


To resolve this issue, remove the GUID information by using the Active Directory Service Interfaces (ADSI) Edit snap-in. To do this, follow these steps.

Note ADSI Edit is included with the Microsoft Windows Server 2003 Support Tools. To install the Windows Server 2003 Support Tools, double-click Suptools.msi in the Support\Tools folder on the Windows Server 2003 CD.

Warning If you use the ADSI Edit snap-in, the LDP utility, or any other LDAP version 3 client, and you incorrectly modify the attributes of Active Directory objects, you can cause serious problems. These problems may require you to reinstall Microsoft Windows 2000 Server, Microsoft Windows Server 2003, Microsoft Exchange 2000 Server, Microsoft Exchange Server 2003, or both Windows and Exchange. Microsoft cannot guarantee that problems that occur if you incorrectly modify Active Directory object attributes can be solved. Modify these attributes at your own risk.

  1. Click Start, point to All Programs, point to Windows Support Tools, and then click Command Prompt.
  2. At the command prompt, type adsiedit.msc, and then press ENTER.
  3. Connect to a domain controller if you are not already connected.
  4. Expand Configuration Container [], expand CN=Configuration,DC=contoso,DC=com, expand CN=Services, right-click CN=Microsoft Exchange, and then click Properties.

Note In this step, is a placeholder for the domain name. The other italic words are also placeholders.

  1. In the CN=Microsoft Exchange Properties dialog box, locate and then double-click the otherWellKnownObjects attribute.
  2. Under Values, select the GUID information, click Remove, and then click OK.

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