SQL 2008 R2 Setup-I get Could not open key: UNKNOWN\Components\C89F41A0CA86...


  • I am trying to install SQL 2008 R2 on a Windows Server 2008 machine. It has had SQL 2005 and 2008 R2 installed before.
    I uninstalled everything to do with SQL using the Add/Remove Programs, CCleaner and Windows Installer Cleaner.
    I am running SQLEXPRWT_x64_ENU.exe (Signing time of Monday, April 05, 2010 9:29:28 AM) that I downloaded from Microsoft. I Unblocked the file, I am logged in as Administrator and I Run as Administrator.
    I get
    The following error has occurred:
    Could not open key: UNKNOWN\Components\43C313DB6EBAD154F901C6B5BFA69F06\C2BF01D69A282F04190DB76EC40FAD2F.   Verify that you have sufficient access to that key, or contact your support personnel.
    Another window shows:
      SQL Server 2008 R2 Setup has encountered an error.

    Problem signature:
      Problem Event Name:    SQL100MSI
      Problem Signature 01:    10.50.1600.1
      Problem Signature 02:    10.50.1600.1
      Problem Signature 03:    SqlSupport.msi
      Problem Signature 04:    0xE1C5DEF0
      Problem Signature 05:    1402
      Problem Signature 06:    Install_SqlSupport
      OS Version:    6.0.6002.
      Locale ID:    1033

    Additional information about the problem:
      LCID:    1033

    It occurs during Setup Support Files, ExecuteStandardTimingsWorkflow.

    Does anyone have any ideas?
    Friday, February 17, 2012 6:10 PM


  • Hi Deb,


    The error essentially means that there are some orphan entries in registry and also permissions issue.

    While you have run as Administrator, you could uninstall all the existing SQL Server 2008 R2 instance again and reinstall a new instance.
    Please follow the steps in SQL Express is not installed properly. Steps to be taken before reinstall again.

    If it is not work, check this blog which could help you.


    Please remember to mark the replies as answers if they help and unmark them if they provide no help. This can be beneficial to other community members reading the thread.

    Tuesday, February 21, 2012 9:52 AM