Microsoft .NET questions

[cheezit]

Hopefully, this goes in this forum.

When I go to the Windows Update site, under "Software, Optional", there are the following updates for Microsoft .NET:

Microsoft .NET Framework 3.0 Service Pack 1
Microsoft .NET Framework 2.0 Service Pack 1
Update for .NET Framework 3.0: x86
Microsoft .NET Framework version 1.1


My first question is why are there so many versions of .NET? And my second question is, assuming that there is a good reason for so many versions of .NET, do I need to get all of these?

Thanks

[Miz]

If you never use any software requiring .NET Framework then, no, you don't need any of them. On the other hand, if you do use software that needs it, that software won't work until you install (or reinstall) .NET Framework.

There are so many versions because Microsoft has tweaked/improved/added to the original version. Each is dependent on the one before so all are needed.

[Broni]

On the other hand, if you do use software that needs it, that software won't work until you install (or reinstall) .NET Framework.
In most cases, that software will tell you, if you need to install something.