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Chief Architect's Blog on software development

31 Jan 2008
Installing .Net Framework 3.5 on Vista
Windows Vista is pre-installed with .Net Framework 2.0 and 3.0. If your software application rely on .Net Framework 3.5, you need to install it on your own. When you install .Net Framework 3.5 on a newly installed Vista, you might find an error similar to the following:
[01/30/08,14:24:02] Microsoft .NET Framework 2.0SP1 (CBS): [2] Error: Installation failed for component Microsoft .NET Framework 2.0SP1 (CBS). MSI returned error code 22 [01/30/08,14:24:12] WapUI: [2] DepCheck indicates Microsoft .NET Framework 2.0SP1 (CBS) is not installed.

The reason is that .Net Framework 2.0 and .Net Framework 2.0SP1 are not the same.The easiest way to solve this problem is to install all the Windows Update before you install .Net Framework 3.5.

The name .Net Framework 3.5 is quite confusing for many people.  Unlike .Net Framework 2.0, which is a replacement of .Net Framework 1.1, .Net Framework 3.5 is not a replacement of .Net Framework 3.0 and 2.0.  It is, in fact an add-on to .Net Framework 3.0 and 2.0. It cannot run independent of 3.0 and 2.0.

More information about .Net Framework can be found from the following Microsoft site: http://msdn2.microsoft.com/en-us/netframework/default.aspx.


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