Microsoft .NET Framework

Several Versions Of Microsoft .NET Framework

Good afternoon,

I am looking for some advice please.
When I do a Windows Update I usually get an update for the following:-

(1) Security Update for Microsoft .NET Framework 1.1 SP1 on Windows XP, Windows Vista, and Windows Server 2008 x86
(2) Security Update for Microsoft .NET Framework 2.0 SP2 on Windows Vista SP2 and Windows Server 2008 SP2 x86
(3) Security Update for Microsoft .NET Framework 3.0 SP2 on Windows Vista SP2 and Windows Server 2008 SP2 x86
(4) Security Update for Microsoft .NET Framework 3.5 SP1 on Windows XP, Server 2003, Vista, Server 2008 x86
(5) Security Update for Microsoft .NET Framework 4 on XP, Server 2003, Vista, Windows 7, Server 2008 x86

My question is, do I ONLY need to update number (5) or ALL of them please?
Is having all of these on my system necessary or can I Delete/Uninstall numbers (1) to (4), and if so how can I do this please.

Thanks in advance.

Regards,
PAB

If .net is installed then it should be updated and based upon the name these update them instead of installing them. If however .net isn't installed then you only need to install it if you run a program that uses it or you do .net programming. If they are installed I would leave it. You may use a program that requires it. Also although not likely removing windows components might damage the system.

Thanks for the reply townsbg,

I did think as much but just wanted to clarify the situation before I did any deleting or uninstalling.
I will just keep installing all the Windows updates as and when they appear.
Thanks very much for your time and reply.
Have a great weekend.

Kind regards,
PAB