Solution for "Previous releases of Microsoft Visual Studio 2008 - failed".

Today I tried to install SQL Server 2008 Version after installed Visual Studio Team Suite 2008.

In the "Installation Rules" Section, I got the error "Rule "Previous releases of Microsoft Visual Studio 2008" failed." as shown below

 

Then i clicked on the failed link, which is next to the rule.it shows the following popup Message

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Rule Check Result
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Rule "Previous releases of Microsoft Visual Studio 2008" failed.


A previous release of Microsoft Visual Studio 2008 is installed on this computer. Upgrade Microsoft Visual Studio 2008 to the SP1 before installing SQL Server 2008.
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OK   
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As suggested in the Error message, I Upgraded the Microsoft Visual Studio 2008 with SP1, then i continued to install SQL Server 2008, it installed well without any issues.

You Can Download the VS 2008 SP1 from the following link, 
http://msdn.microsoft.com/en-us/vstudio/cc533448.aspx

Before continue to install, ensure that your existing system are supporting all the rules which are defined by microsoft. 

Go thru the following article, 
KB956139 – Visual Studio 2008 SP1 may be required for SQL Server 2008 installations.

This article explains, what are actions need to do before start insatll SQL Server 2008

Hope it Helps you!