An installation package for the product Microsoft SQL Server Native Client cannot be found. Try the installation again using a valid copy of the installation package 'sqlncli.msi'.

Work Around:-




Go to the Binaries Location,

>> Go to D:\SQL Server\SQL-2005\Servers\Setup
>> Search sqlncli.msi
>> Double click choose Repair
>> Once Done Try to install, It will succed.


*This might work, only when you installed and uninstalled couple of time with different sql servers editions

Solution:-

If it failed to work as mentioned above

Please visit http://support.microsoft.com/kb/929667
http://social.msdn.microsoft.com/Forums/en-US/sqlsetupandupgrade/thread/16fd90cf-0dbc-4012-9970-6ca29b6f4aef

Upgrading to SQL Server 2012

http://blogs.extremeexperts.com/2012/05/17/upgrading-to-sql-server-2012/
By Vinod Kumar