What registry entries does SQL Server use?

A. A. SQL Server uses the following registry keys. (If you delete all these then the SQL setup routine shouldn't spot the old version)

All versions

• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSSQLServer
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer

6.0 and above.

• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSDTC
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SQLExecutive

7.0 and above

• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SQLServerAgent
• HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft SQL Server 7
• HKEY_LOCAL_MACHINE\Software\Microsoft\MSSQLServ65

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