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why show dotnet 3.5.1. update?

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I had installed dotnet 3., 3.5, 3.5 sp1, 4 etc.

in some update, it has already updated them all to 4.5

WUD is still showing update to dotnet 3.5.1

what is the purpose? wud should show the update only for 4.5 to me.

(the problem is windows update also shows some 5 updates of donet 3.5.1).


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i think WUD shows 3.5.1 (ie. 2.0 sp2, 3.0 sp2, 3.5 sp1) updates but not 4.5 because of 2 reasons:
1. 3.5.1 is already included in 7 RTM, so with the UL for 7 saying 'post-sp1', it's expected to show post-sp1 3.5.1 updates, unless 3.5.1 is disabled / even remove. while 4.5 isn't out-of-box in 7 sp1
2. i haven't use .net framework in programming yet so i'm not sure about this one, but i remember a friend said that 4.5 is supposed to be a complete replacement for 4 (aside from the frequent breaks of 4.0 apps that use 4.5) (i guess 4 & 4.5 can't even be installed in the same sys), but 4.5 isn't intended to be a complete replacement for 3.5.1, so you should install & update 4.5 & 3.5.1 just to be prepared for needing apps

however, i agree that 7sp1 UL should include 4.5 updates, because 4.5 is getting common for 7 so i think most apps currently developed are targeted to it & 4.0 apps are being converted to it



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Correct. 4.5 only replaces 4.0, not 3.5.1, so you will continue to get updates for both 4.5 and 3.5.1.

Cheers and Regards

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