Microsoft Dot Net Framework

Newer versions do not always supersede everyone previous version, so you do need all of them if you want to make sure that any program that depends on a specific version has that required version.

 

Bruce:

Version 1.1 SP1 was released in August 2004.

Version 3.5 SP1 was released in November 2008(which includes versions 2.0 SP2 and 3.0 SP2).

Version 4.0 was released in February 2011.

Depending how old or how new the programs are that are installed in your computer, the ones that require Microsoft .NET Framework will use a specific version.

That's why it's best NOT to uninstall any of them.

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Bruce:

If and when you need to do a "clean" reinstall of XP, there will be 100+ post-SP3 high priority and optional updates to install afterwards so you can get XP up-to-date.

Versions 1.1 and 3.5 and 4.0 of .NET Framework will be among the list.

Deselect and hold off installing them until you get the other updates installed.

Once that's done, select versions 3.5 and 4.0 of .NET Framework to install.

I resurrect and upgrade XP computers on a regular basis, and this update sequence works well for me.

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