Installed Exch2007 RTM on Win2k3x64 R2 server back in November. Installed roles: MBX, CAS, HT. Wanted to uninstall completely and reinstall Exch2007SP1. Initial uninstall not successful. Tried uninstall of CAS and HT roles only - successful. Still have MBX (and tools) on server and cannot remove them. Have tried uninstall from Add/Remove as well as command line. The error received when running uninstall is Event ID 1002 - "Exchange Server component Mailbox Role failed. Error:Error. Process execution failed with exit code 5". Exchange Setup logs are as follows: (truncated in the interest of time) [2/1/2008 1:14:46 PM] [2] Beginning processing.[2/1/2008 1:14:46 PM] [2] Starting: C:\WINDOWS\system32\regsvr32.exe arguments: /s /u "E:\Program Files\Exchsrvr\bin\Monitoring\AMD64\DiagnosticCmdletController.dll"[2/1/2008 1:14:46 PM] [2] Process standard output: [2/1/2008 1:14:46 PM] [2] Process standard error: [2/1/2008 1:14:46 PM] [2] [ERROR] Unexpected Error[2/1/2008 1:14:46 PM] [2] [ERROR] Process execution failed with exit code 5.[2/1/2008 1:14:46 PM] [2] Ending processing.[2/1/2008 1:14:46 PM] [1] The following 1 error(s) occurred during task execution:[2/1/2008 1:14:46 PM] [1] 0. ErrorRecord: Process execution failed with exit code 5.[2/1/2008 1:14:46 PM] [1] 0. ErrorRecord: Microsoft.Exchange.Configuration.Tasks.TaskException: Process execution failed with exit code 5.[2/1/2008 1:14:46 PM] [1] [ERROR] Process execution failed with exit code 5.[2/1/2008 1:14:46 PM] [1] Setup is halting task execution because of one or more errors in a critical task.[2/1/2008 1:14:46 PM] [1] Finished executing component tasks.[2/1/2008 1:14:46 PM] [1] Ending processing.[2/1/2008 1:14:46 PM] [0] The Exchange Server setup operation did not complete. Visit http://support.microsoft.com and enter the Error ID to find more information.[2/1/2008 1:14:46 PM] [0] End of Setup[2/1/2008 1:14:46 PM] [0] ********************************************** Tried running Exch2007 RTM install again (to then run uninstall) - stated that since uninstall failed, I couldn't install. Tried running Exch2007SP1install over the top (just for fun) and had no luck there either - install failed.Exchange SysAttendant service starts and immediately stops. Info Store Svc is the only one that will stay running. The other remaining Exchange services state that a "dependency service does not exist or is marked for deletion". (This makes me think that the uninstall did not complete successfully.) Have read some threads about: 1.running setup.com /m:recoverserver RESULT: "There is a version mismatch between the running application and the installed application." 2. registering the DiagnosticCmdletController.dll RESULT: Uninstall still unsuccessful. 3. modifying the OtherWellKnownObjects attribute RESULT: Uninstall still unsuccessful. Pls help! (...and, before anyone asks, yes I have rebooted the server.) Thanks!

Ok, solved above issue. Found one post that said to run this: MsiExec.exe /X{24B2C164-DE66-44FE-B468-A46D9D5E6B31} Whatever that did, removed it from AD and Exch 2007 did not show in Add/remove programs anymore. From there, I formatted/rebuilt the server. Hope this helps some poor soul.

I have problem with to remove exchange 2007, I used the next syntaxis C:\Exchange2007>setup.com /mode:uninstall /dctar1 Welcome to Microsoft Exchange Server 2007 Unattended Setup Preparing Exchange Setup The following server roles will be removed Hub Transport Role Mailbox Role Management Tools Performing Microsoft Exchange Server Prerequisite Check Configuring Microsoft Exchange Server Hub Transport Server Role ......................... FAILED Could not find a directory entry for the server STAR1. The Exchange Server setup operation did not complete. Visit http://support.microsoft.com and enter the Error ID to find more information. Exchange Server setup encountered an error. C:\Exchange2007>setup.com /m:recoverserver Welcome to Microsoft Exchange Server 2007 Unattended Setup Preparing Exchange Setup The following server roles will be recovered Management Tools Server is not found in Active Directory. Server must be present in Active Directory to recover. Exchange Server setup encountered an error. C:\Exchange2007>setup.com /m:recoverserver I need your help, I need reinstall Exchange 2007 on the organization

Run RegSvr32.exe against the diagnosticcmdletcontroller.dll in BOTH of the following locations: C:\Program Files\Microsoft\Exchange Server\Bin\Monitoring\AMD64 C:\Program Files\Microsoft\Exchange Server\Bin\Monitoring\x86 Be sure they both state registration successful. You should be good to go after that... ManagedNet

ManagedNet's solution worked great! Thank you!

Thanks, I can to resolve the issue.Regards