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"Consistency validation for SQL Server registry keys" failed.

Description:

Issue: Installation of SQL Express 2008 fails with the error: "Consistency validation for SQL Server registry keys" failed

Error:
Rule "Consistency validation for SQL Server registry keys" failed
The SQL Server registry keys from a prior installation cannot be modified. To Continue; see SQL Server Setup documentation about how to fix registry keys.


Solution

Steps
1. Located HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server in registry
2. Right click and go to Permission
3. Click on Advance
4. Tick on both check box
     I. Inherit from parent the permission...
    II. Replace permission entries on all child objects..., click OK
5. Click OK again
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