Introduction
When we open SQL Server Configuration Manager by using the SQLServerManager.msc file, it will determine the bit version of the operation system and decide to connect to the 32-bit or 64-bit SQL Server WMI provider.
The SQL Server WMI Provider consist of a DLL (sqlmgmprovider.dll) and a MOF (sqlmgmproviderxpsp2up.mof) which defines the object classes. The provider query the classes of SQL Server services, SQL Server client and server network settings, and server aliases from the DLL file and MOF file and performs operations.
On 64-bit systems, it will load the 32-bit and 64-bit SQL Server WMI provider side-by-side and supply data to the application with corresponding bit version. The 64 bit provider supply data to 64 bit version of SQL Server and the 32-bit provider to 32-bit version of SQL Server.
Since WMI has only one repository (which stored the static WMI data and object definitions), both the 32-bit instance and the 64-bit instance of SQL Server share the same WMI configuration file (sqlmgmproviderxpsp2up.mof).
On 32 bit systems, we can find DLL and MOF file of the 32 bit SQL Server WMI providers under:
C:\Program Files \Microsoft SQL Server\number\Shared
On 64 bit systems, both 32-bit and 64-bit SQL Server WMI providers are install, and the file locate as follows:
32 bit DLL file : C:\Program Files (x86)\Microsoft SQL Server\number\Shared
64 bit DLL file: C:\Program Files \Microsoft SQL Server\number\Shared
The shared MOF: C:\Program Files (x86)\Microsoft SQL Server\number\Shared
(Note: The value of number depends on the version of SQL Server:nnn )
Solution
If you found SQL Network Configuration 64bit is missing, please check the DLL file of the 64 bit provider is not corrupted or missing and verify your have sufficient permission to access the file in the shared folder.
Reference
WMI Provider for Configuration Management
http://technet.microsoft.com/en-us/library/ms180499(v=sql.90).aspx
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