Hi! When I check the .Net Framework 3.5 feature in "Control Panel/ Programs/Turn Windows features on or off", it tries to download, but fails after a while.

It Works before adding a computer to Our domain, but fails after domainjoin. Tested this With several computers.

Something tells me it's because of Windows update or something. How can i find out whats blocking it from downloading and insta

You can do it without using the Windows Update service.

Use the Windows installation media and open an elevated command prompt and run the next command.

Dism /online /enable-feature /featurename:NetFx3 /All /Source:<var><drive></var>:\sources\sxs /LimitAccess

Read more:

http://support.microsoft.com/kb/2734782

Yeah. Thx. I did that to make it work. But is there a log somewhere that says "Couldn't download because....." and where I can see what the computer tried to do?

Hi,

You can refer to these steps to locate installation log of .net framework:

How to locate the latest installation log file and installation error code:

1. Navigate into the temp directory (Click Windows button, type %temp% in search bar and click temp folder in search results)
2. Search for filename that starts with dd_net_framework35_MSI (It is an txt document)
3. Navigate to the end of the html file.

Also you can refer to this blog to do the troubleshooting if you find any error related to below:

Possible .NET Framework 3.5 installation failure caused by broken MSXML registration
http://blogs.msdn.com/b/astebner/archive/2007/11/01/5826719.aspx

Steps I use to diagnose .NET Framework 3.0 and 3.5 installation failures related to the ServiceModelReg.exe custom action
http://blogs.msdn.com/b/astebner/archive/2008/03/28/8342307.aspx

Otherwise, please post back the log for res