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windows net framework

Posted on 2012-03-31
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Last Modified: 2012-04-01
hello there,
I have windows 7 with visual studio 2010 and net framework v4
I would like to install the net framework 3.5 but it says
"turn windows features on or off"
when I turn it on and off from control panel > programs > turn windows features
it does NOT work and I get that error message all the time..
how can I install it correctly?
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Question by:XK8ER
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9 Comments
 
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Expert Comment

by:John Hurst
ID: 37792132
Installing .NET Framework 3.5 can only be done through Windows Features on Windows 7. What is not working?  (a) The Feature?  or (b) something that depends on the Feature?
... Thinkpads_User
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Author Comment

by:XK8ER
ID: 37792137
how exactly do I install it?
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Expert Comment

by:John Hurst
ID: 37792144
Go to Programs and Features. On the left, click on Windows Features and allow it to load. Then scroll down for .NET Framework 3.5.1 and enable it if is not enabled. I have .NET Framework V4 installed so my .NET 3.5 is checked but greyed out. I think V4 replaces it all.

Also, I have subcomponents that were not enabled (out of the box) and I have not enable them (no apparent need).  See below:

Windows7-NET-Framework3
... Thinkpads_User
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LVL 98

Expert Comment

by:John Hurst
ID: 37792170
I did a bit of reading because of this, and it appears that .NET Framework 3.5.1 as supplied by Windows 7 inlcudes everything back and including V2. I am not certain about V1.1 because it appears separately in the the list of installed programs, but not in the list of installed updates

V4 is additional and was a Windows Update at one point that I allowed to be installed.

Starting from here with Windows 7 is appears that .NET 4 and .NET 3.5.1 should accomodate everything out there. It does for me (as a user). .... Thinkpads_User
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Author Comment

by:XK8ER
ID: 37792172
thats exactly what i have in my system
when i try to load dlls nothing is there.
i can run v2 and v4 apps with no problems
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Expert Comment

by:John Hurst
ID: 37792183
You probably have to upgrade the apps to V4 then, because there isn't much else you can do with Windows 7. One article suggested enabling the Foundation components to provide compatiblity. You might try that, but I cannot vouch for it in any way.

Here is a page that describes how to test what is installed by checking registry keys. Do take care, of course, using the Registry.

http://stackoverflow.com/questions/199080/how-to-detect-what-net-framework-versions-and-service-packs-are-installed

... Thinkpads_User
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Accepted Solution

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John Hurst earned 2000 total points
ID: 37792190
Go here:

https://skydrive.live.com/?cid=27e6a35d1a492af7&id=27E6A35D1A492AF7%21397

and download netfx_setupverifier_new .

I did and ran it. Everything from V2 forward to V4 runs successfully and verifies. V1.1 does not, but that probably does not matter to me.

Windows7-NET-Framework35
... Thinkpads_User
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Expert Comment

by:John Hurst
ID: 37792197
Please try the tool above. I tried it on my two Windows 7 Pro machines and everything from V2 forward verifies perfectly. I do not even have V1.1 on one machine.

So does it verify for you?  And then, assuming so, if you have a problem with an application, it would be an application problem rather than a Windows problem.

.... Thinkpads_User
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LVL 98

Expert Comment

by:John Hurst
ID: 37794117
XK8ER - Any followup on this?  You should at least know whether all your .NET Frameworks are installed.  ... Thinkpads_User
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