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This error often pops up while installing SQL Server Express / Full edition on machine.

Fix:

• Right Click the folder (say, C:\Sql2005) in which you wish to install SQL Server.
• In Tab ‘General’, click on ‘Advanced’
• Uncheck ‘Compress contents to save disk space’
• Uncheck ‘Encrypt contents to secure data’

and try installing. If this does not work, please log in the comment.

Installation failed with error code: (0×80091007), The hash value is not correct.

Silverlight 3 Tools fails with this error only when there is NO internet connectivity.

Solution

Unzip the Silverlight 3 Tools executable to a folder and execute following in the sequence mentioned below:

• silverlight_sdk.msi
• VS90SP1-KB967143-enu.msp
• VS90SP1-KB967144-enu.msp
• VS_SilverlightTools_Setup.exe

What is not installed?

Silverlight 3 Developer Runtime is still not installed as this is not shipped along with Silverlight 3 Tools executable.

You will not be able to run (execute) the Silverlight Application from Visual Studio 2008.

Work arounds?

Two ways to still execute a Silverlight Application

• Publish the application on local IIS / folder & execute
• Execute from Blend 3

What you still sacrifice is – NO debugging experience.