Does the .Net Framework 4.0 Installer include the .Net Framework 3.5?

by

The .NET 4.0 installer doesn’t include the .NET framework 3.5. There is some information on this topic in MSDN:

The .NET Framework 4 is highly compatible with applications that are built with earlier .NET Framework versions, except for some changes that were made to improve security, standards compliance, correctness, reliability, and performance.

The .NET Framework 4 does not automatically use its version of the common language runtime to run applications that are built with earlier versions of the .NET Framework. To run older applications with .NET Framework 4, you must compile your application with the target .NET Framework version specified in the properties for your project in Visual Studio, or you can specify the supported runtime with the <supportedRuntime> Element in an application configuration file.

You can install .NET 3.5 and .NET 4.0 along side each other. Visual Studio 2010 also includes improved targetting support for .NET 3.5. ScottGu’s blog talks about this in more detail.

More Related Contents:

  1. Troubleshooting .NET “Fatal Execution Engine Error”
  2. Windows SDK 7.1 Setup failure
  3. Uninstalling an MSI file from the command line without using msiexec
  4. How do I detect what .NET Framework versions and service packs are installed?
  5. Which method performs better: .Any() vs .Count() > 0?
  6. WCF – How to Increase Message Size Quota
  7. How can I run PowerShell with the .NET 4 runtime?
  8. How to make a .NET Windows Service start right after the installation?
  9. Wait until file is unlocked in .NET
  10. .NET 4.0 has a new GAC, why?
  11. When creating a new GUI, is WPF the preferred choice over Windows Forms? [closed]
  12. How do I run Visual Studio as an administrator by default?
  13. LINQ on the .NET 2.0 Runtime
  14. IDictionary in .NET 4 not covariant
  15. Can I use the task parallel library in a .Net 3.5 project?
  16. Mixed mode assembly is built against version ‘v2.0.50727′ of the runtime
  17. When and when-not to install into the GAC?
  18. Change C++/CLI project to another framework than 4.0 with vs2010
  19. How to modify .NET config files during installation?
  20. Maximum value of maxRequestLength?
  21. How to get COM Server for Excel written in VB.NET installed and registered in Automation Servers list?
  22. Why is the first WCF client call slow?
  23. .NET 4.0 build issues on CI server
  24. How do I launch an application after install in a Visual Studio Setup Project
  25. What’s the ‘correct’ way of registering/installing an Assembly to the GAC?
  26. When creating a new GUI, is WPF the preferred choice over Windows Forms? [closed]
  27. Why Tuple’s items are ReadOnly?
  28. Where can I find a TPL dataflow version for 4.0?
  29. How to begin WPF development?
  30. WPF slow to start on x64 in .NET Framework 4.0

Leave a Comment