How to manually remove Exchange 2007

(Note:not supported by MSFT)
  1. Run setup /m:uninstall
  2. Stop and disable all the Exchange 2007 services
  3. Use Registry Editor (Start->Run->Regedit) to remove these Exchange related registry keys:
    • HKLMSOFTWAREMicrosoftExchange
    • HKLMSYSTEMCurrentControlSetServicesMSExchange* (all the keys starting with “MSExchange”)
    • HKLMSOFTWAREMicrosoftWindowsCurrentVersionUninstallMicrosoft Exchange
  4. Remove the entire Web Server role (don’t forget to reinstall afterwards as it’s a prerequisite for E2K7!)
  5. Remove the Exchange 2007 server from Active Directory. I ended up deleting the entire “Microsoft Exchange” branch from ADSIEdit (Configuration Container > Services > Microsoft Exchange) as my Org only counts one server.
  6. Use Windows Explorer to delete:
    • C:Program FilesMicrosoftExchange Server
    • C:ExchangeSetupLogs
  7. Consider using Windows Installer CleanUp Utility to remove all the exchange related info from the installer database.
  8. Remove the security groups created by Exchange setup from AD
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