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Installing MS SQL Server 2008 Developer edition on a Vista Ultimate 64 Bit machine keeps returning the following error message:

SQL Server Setup failure

SQL Server Setup has encountered the following error:
Unknown property.

I've tried the following:

  • Uninstalled the previous installation
  • Deleted all folders that were installed and had to do with SQL Server 2008
  • Cleared my registry using ccleaner
  • Tried 'fixit' utility from Microsoft uninstalling left overs

I'm totally out of ideas.

Community
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Yustme
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  • To determine the cause of error messages like these, it can be helpful to record every action an application performs, using [Process Monitor](http://technet.microsoft.com/en-us/sysinternals/bb896645). [This article](http://blogs.technet.com/b/markrussinovich/archive/2012/01/05/3473797.aspx) is an example of how it can be applied. – Oliver Salzburg Feb 04 '12 at 16:01
  • the setup already records everything to a log file. I can't make up anything out of it. But i did give it a shot, that PM software eats my memory totally out. – Yustme Feb 04 '12 at 19:06

2 Answers2

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Check registry branch HKEY_CLASSES_ROOT\Installer\Products\ and remove any SQL Server related entries (e.g. D30CF9A3586C138449FCE4FD3D474979) if exists.

Sergey
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  • I have removed some of those product codes a few weeks back. I couldn't find this one in the register. But i did found some SQL Server related stuff. Thought i removed them all. But it still gives me that unknown property error :( –  Feb 04 '12 at 12:35
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I just installed sql server 2012. That went flawless. Problem solved.

Yustme
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