Uninstalling Windows Internal Database

It is not usually necessary to uninstall Windows Internal Database, which WSUS installs as the default SQL Server version. It is not possible to remove this application with Add or Remove Programs, and it will not be uninstalled automatically when WSUS is uninstalled. If you wish to do so, you will need to call the msiexec executable with the correct key for the operating system platform. 

Uninstalling Windows Internal Database is not recommended, because it may affect other applications that may be using the same database instance (such as Windows SharePoint Services). 

To uninstall Windows Internal Database
1.  Open a command shell.
2.  Call msiexec with the correct key for the operating system platform.
    • On 32-bit platforms: msiexec /x {CEB5780F-1A70-44A9-850F-DE6C4F6AA8FB} callerid=ocsetup.exe
    • On 64-bit platforms: msiexec /x {BDD79957-5801-4A2D-B09E-852E7FA64D01} callerid=ocsetup.exe
The removal of the application may not remove the default .mdb and .ldb files, which will cause a subsequent WSUS 3.0 installation to fail. These files can be deleted from the %windir%\SYSMSI\SSEE directory.

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