I'm trying to upgrade the Forest to allow for Exch2007. Exch2003 has been installed.setup /pl successfullysetup /prepareschema ran successfully & replicatedthe problem is with setup /prepareADIn the CMD window I get the following error: Organization Preparation ......................... FAILED An error occurred. The error code was 3238230758. The message was Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory..In the ExchangeSetup.log the errors I found are:[3/30/2009 9:23:18 AM] [2] ScRunLDIFScript (f:\08.01.0240\sources\dev\admin\src\libs\exsetup\exmisc.cxx:888) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] ScInstallLDIFScript (f:\08.01.0240\sources\dev\admin\src\libs\exsetup\server.cxx:149) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] Leaving ScInstallLDIFScript[3/30/2009 9:23:18 AM] [2] CAtomOrgLevelCt::ScAddDSObjects (f:\08.01.0240\sources\dev\admin\src\udog\exsetdata\components\server\a_orglevelct.cxx:379) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] Leaving CAtomOrgLevelCt::ScAddDSObjects[3/30/2009 9:23:18 AM] [2] CBaseAtom::ScRefreshDSObjects (f:\08.01.0240\sources\dev\admin\src\udog\setupbase\basecomp\baseatom.cxx:1476) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] CAtomOrgLevelCt::ScReinstall (f:\08.01.0240\sources\dev\admin\src\udog\exsetdata\components\server\a_orglevelct.cxx:169) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] Leaving CAtomOrgLevelCt::ScReinstall[3/30/2009 9:23:18 AM] [2] mode = 'Reinstall' (61955) CBaseAtom::ScSetup (f:\08.01.0240\sources\dev\admin\src\udog\setupbase\basecomp\baseatom.cxx:535) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.[3/30/2009 9:23:18 AM] [2] ScSetupAtom (f:\08.01.0240\sources\dev\admin\src\udog\exsetdata\exsetds.cxx:897) Error code 0XC1037AE6 (31462): Extending the schema in the Active Directory failed. Please consult the error log LDIF.ERR in your TEMP directory.I have Schema Admin, Enterprise Admin & Exchange Admin rights. Can anyone provide some insight as to what is actually going on here and how to resolve?JPH

Hi Please check ldif.err in the temp folder(type %temp% from a command prompt to open temp folder) and then post the error here. Besides, base on my research, we may use below methods to solve the problem: 1. Try to add the Exchange server 2007 server name and IP address to the Hosts.txt(%SystemRoot%\system32\drivers\etc\) file. 2. The issue can be happening when missing msExchBaseClass, we can check the schema container. a. We need to follow the steps in the article below to install the Schema snap-in Install the Active Directory Schema snap-in http://technet.microsoft.com/en-us/library/cc755885.aspx b. In the Active directory schema snap-in, located the container object and selected the properties. c. In the relationship tab, please find the Auxiliary Classes and then check if tmsExchBaseClassis there. cn=group, cn=Schema, Cn=Configuration, dc=DC, dc=com, dc=aumsExchBaseClass;msExchCustomAttributes;msExchIMRRecipientcn=container, cn=Schema, Cn=Configuration, dc=DC, dc=com, dc=aumsExchBaseClasscn=orgnization-unit, cn=Schema, Cn=Configuration, dc=DC, dc=com, dc=aumsExchBaseClass d. If not, we need to add the msexchBaseClass there and then rerun the command /prepareAD Regards, Xiu

Thank you for the suggestions. I ended up opening a ticket with MS, and the results was obtaining a fresh download of the installation files. Something must have gotten corrupt when copying the files from Dev into Production.JPH