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DotNet 3.5 on Windows 7 to Install SQL Server 2008

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Written by Vidhya Sagar | 21 January 2010

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This is a quick post to install or enable .Net 3.5 on windows 7. Last couple of weeks I’m seeing more questions on installing SQL Server 2008 in windows 7 and the users are unable to install SQL Server 2008 pre-requisite (.Net 3.5 ). To Install SQL Server 2008, windows installer 4.5 & .Net 3.5 is required. Windows installer 4.5 is installed and enabled by default, .Net 3.5 is included in windows features, so you can directly go there and turn on .Net 3.5, windows 7 will automatically install this. To turn on .Net 3.5  in Windows 7 just follow the steps below

  • Login into Windows 7 with admin rights
  • Open Control Panel
  • Open “Programs and Features”
  • A new window will be pop up, in the left hand pane of “Programs and Features” you can find “Turn Windows Features ON or OFF”, click on this

DotNet_windows7_1

  • Windows features dialog box gets open, in that list scroll down and enable the checkbox “Microsoft .Net Framework 3.5.1”, If needed you can also enable WCF (Windows Communication foundation) and click ok

DotNet_windows7_2

  • Windows 7 will install DotNet 3.5 in your machine.
  • Now you can continue with SQL Server 2008 installation.

If you have any questions please post it in our discussion thread.

Comments  

 
#7 Vidhya Sagar 2010-04-14 21:53
Thanks for sharing the details Peet.
This seems really funny, If Ent edition can pickup then STD edition should, I'm not sure why it's not working with STD.
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#6 2010-04-14 17:29
Hi all,

I was trying to install SQL server 2008 standaard and did not get rid of the errormessage that I need to install .NET frameword 3.5.1.
As soon as I switched to SQL server 2008 enterprise version all wors fine!!!

So this mistery is solved as it seams...
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#5 2010-04-14 15:06
Hi,

I also still get the message that I have to install .NET framework via add/remove windwos features. But I have already done so :-S

For any suggestion I wouild be very greatful!
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#4 Vidhya Sagar 2010-03-30 23:06
Have you installed SP1 for VS2008? IF you have VS2008 then SP1 for this software is mandatory before installing SQL.
So apply SP1 for VS2008 and then give a try to SQL installation.
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#3 2010-03-30 15:32
Hi,
i have already installed VS 2008,so i have installed .net 3.5 sp1 but when trying to install sql 2008, it gives error "Microsoft .Net Framework 3.5 SP1 installation failed.Sql Server 2008 Setup requires .NET Framework 3.5 SP! to be installed"
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#2 Vidhya Sagar 2010-03-04 01:12
Bartek,
Can you make sure it's in Add\Remove programs?
Is the check box is enabled once you opened the features window after installation? Did it succeeded?
You can also get the .Net setup in SQL 2008 DVD, you can also try from there.
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#1 2010-03-04 00:58
Hi,

Unfortunatly this solution doesn't work for me... I have still the same problem:

.NET 3.5 instalation Failed .NET 3.5 is required.
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