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I already tried a lot to fix the following problem: I try to install some Windows updates on a Windows 10 PC.

The update for "Microsoft SQL Server 2005 Express Edition Service Pack 2 (KB 921896)" breaks with error code 0x80070643. This version is needed for an old application.

I tried to install it manually but the installation of this files break too: http://www.catalog.update.microsoft.com/search.aspx?q=kb2463332 I also reinstalled NET Framework.

Did somebody face the same problem already and can give me some more hints to fix this?

Best regards´!

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  • It's been EOL for 4 years. You'd probably do better putting it in a Win7 VM & not letting it anywhere near the outside world.
    – Tetsujin
    Jul 25 '20 at 13:34
  • @Tetsujin: We're talking Vista here ...
    – harrymc
    Jul 25 '20 at 17:05
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Error code 0x80070643 is meaningless: it stands for ERROR_INSTALL_FAILURE. You could also try to disable the antivirus.

A user reported success with this method:

  1. Opened the SQL Server Configuration Manager
  2. Opened SQL Server 2005 Network Coniguration
  3. Right clicked on Protocols for MSSMLBIZ and selected Properties
  4. Set Force Encryption to No
  5. Opened SQL Server 2005 Services
  6. Started SQL Server (MSSMLBIZ) and SQL Server (SQLEXPRESS)
  7. Installed KB 921896

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