I have problems uninstalling Windows Internal Database on one of my Windows 2008R2 servers. There are no dependancies that use this Role. There has not been a WSUS install on that server either. Only thing that was depending on it was Windows System Resource Manager but this is uninstalled successfully. Now if I want to remove WID role I will get the following error: Attempt to un-install Windows Internal Database failed with error code 0x80070643. Fatal error during installation. Theres also reference to a log file msi.log but it does not exist. In ServerManager.log I found these lines: 8464: 2011-03-31 09:36:12.457 [Sync] Calling sync provider of Windows Internal Database ... 8464: 2011-03-31 09:36:12.457 [Provider] Sync:: guest: 'Windows Internal Database', guest deleted?: True 8464: 2011-03-31 09:36:12.457 [Provider] [STAT] For 'Windows Internal Database': 8464: 2011-03-31 09:36:12.457 [Provider] [STAT] Un-Configuration took '7.6E-06' second(s) total. 8464: 2011-03-31 09:36:12.457 [Provider] Begin un-installation of 'Windows Internal Database'... 8464: 2011-03-31 09:36:12.457 [Provider] Uninstall: Guest: 'Windows Internal Database', MSI-Id: 'WSSEE' 8464: 2011-03-31 09:36:12.457 [InstallationProgressPage] Removing... 8464: 2011-03-31 09:36:12.472 [OCSetup] Uninstalling 'WSSEE' ... 8464: 2011-03-31 09:36:12.613 [OCSetup] x64 WYukon Product Code detected 8464: 2011-03-31 09:36:12.613 [OCSetup] About to run: 'msiexec.exe /x {BDD79957-5801-4A2D-B09E-852E7FA64D01} CALLERID=OCSetup.exe /quiet /norestart' 8464: 2011-03-31 09:36:14.454 [OCSetup] ...done. Status: 1603, Message: 'Fatal error during installation' 8464: 2011-03-31 09:36:14.454 [InstallationProgressPage] Verifying removal... 8464: 2011-03-31 09:36:14.485 [Provider] [STAT] For 'Windows Internal Database': [STAT] Un-installation took '2.0254033' second(s) total. 8464: 2011-03-31 09:36:14.485 [Provider] Error (Id=0) Sync Result - Success: False, RebootRequired: False, Id: 51 8464: 2011-03-31 09:36:14.500 [Provider] Sync Message - OperationKind: UnConfiguration, MessageType: Information, MessageCode: 0, Message: <null>, AdditionalMessage: <null> 8464: 2011-03-31 09:36:14.500 [Provider] Error (Id=0) Sync Message - OperationKind: Uninstall, MessageType: Error, MessageCode: -2147023293, Message: Attempt to un-install Windows Internal Database failed with error code 0x80070643., AdditionalMessage: Fatal error during installation 8464: 2011-03-31 09:36:14.516 [InstallationProgressPage] Sync operation completed 8464: 2011-03-31 09:36:14.516 [InstallationProgressPage] Performing post install/uninstall discovery... 8464: 2011-03-31 09:36:14.516 [Provider] C:\Windows\system32\ServerManager\Cache\CbsUpdateState.bin does not exist. 8464: 2011-03-31 09:36:14.516 [CBS] IsCacheStillGood: False.

Hi, Because multiple applications and services use the same instance of Windows Internal Database, removing these applications and services does not remove the data store. If you have removed all applications and services that use Windows Internal Database, you can then remove it by using the Server Manager Remove Features Wizard. If it cannot be removed, please refer to the following article: http://technet.microsoft.com/en-us/library/cc708610(WS.10).aspx If the issue persists, please try the following steps to change some registry keys: Note: Before doing so, please backup your current registry first. 1) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server Edit the "InstalledInstances" value and remove "MICROSOFT##SSEE" 2) Remove the "MICROSOFT##SSEE" subkey under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server 3) Remove the "MSSQL.2005" subkey under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server 4) Rename the following folder: \%Windir%\SYSMSI\SSEE\MSSQL.2005\MSSQL\Data to \%Windir%\SYSMSI\SSEE\MSSQL.2005\MSSQL\Data.old Tim Quan TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

After manual removal of registry keys I was able to uninstall WID. Thank You!