XADM: Registry Key Modifications Made During Setup

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Exchange Services

 HKEY_LOCAL_MACHINE
   \SYSTEM
     \CurrentControlSet
       \Services
         \<Exchange Service>
				

Where <Exchange Service> is MSExchangeDS, MSExchangeDX, MSExchangeIS, MSExchangeMTA, MSExchangeMSMI, and MSExchangeSA. These are used to record the settings used by the individual Exchange services.

Event Log Settings

 HKEY_LOCAL_MACHINE
   \SYSTEM
     \CurrentControlSet
       \Services
         \EventLog
           \Application
             \<Exchange Service>
				

Where <Exchange Service> is MSExchangeDS, MSExchangeIS, MSExchangeMTA, MSExchangePrivateIS, MSExchangePublicIS, and MSExchangeSA. These are used to record the settings used by Event Log for the various Exchange services.

Licensing Settings

 HKEY_LOCAL_MACHINE
   \SYSTEM
     \CurrentControlSet
       \Services
         \LicenseInfo
           \MSExchangeIS
				

This is used for the license settings of Exchange.

Detect Previous Installations

 HKEY_LOCAL_MACHINE
   \SOFTWARE
     \Microsoft
       \Exchange
         \Setup
				

This is used by the Exchange setup program to detect that Exchange is already installed and where it is installed.

Exchange Admin Settings

 HKEY_CURRENT_USER
   \Software
     \Microsoft
       \Exchange
         \MSExchangeAdmin
				

For a full list of the values that are set during Exchange Server setup, see the following files: ADMIN.INS, MSMCON.INS, SERVER.INS, SHARED.INS, SMTP.INS.