Now it is time to mention another situation – total failure of installing SQL Server 2008 R2 on the machine with prior installation of SQL Server 2008. Please note that if you work with Visual Studio 2010 you would most likely get express edition unless declined during install. I do not know for sure if it is related but… just happened to be that after doing unrelated reinstall of VS 2010 I have to reinstall SQL Server 2008 R2 Dev build on the same machine as well.

Fan started when installer refused to be applied on top of existing installation, nice and very informative error about with 2 pages of debug data would appear…

An error occurred creating the configuration section handler for …

Per MSDN Blog, the following solution was suggested – Delete Microsoft Folder in user’s Application Data Folder.

PS: Do not forget to make a registry backup before the doing anything suggested below

OK, then we get to the next hurdle and this is actually more complex… During deployment of actual components error dialog pops up similar to this

After few attempts to fix it, I have stumbled on this nice article. Brace yourself to a long read, attempts to solve errors one by one, or just scroll to the end and just restore registry to its default state for permissions with

If this still fails, consider resetting registry permissions back to the
default settings using the following command:

secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose /areas REGKEYS

This nice little thing will solve all the mysteries…

Enjoy

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