Net Framework 3.5 and Windows 8.1 needs a fix

Question

Impossible install NetFramework on a Windows 8.1 updated.
Even with an offline installer or doing other steps is not possible, always tries to do a download from windows update and ofc, always fails
Error 0x800F0906
Not work --> Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:e:\sources\sxs /LimitAccess
Not work --> Enable feature NF3.5 on windows, control panel.
I tried more steps but with 0 results.
In some possible solutions i got this error
Error 0x800f081f  can not find source files (well, was in spanish i tried to translate it)

Answer 1

Hi hzeros,
>>Even with an offline installer or doing other steps is not possible, always tries to do a download from windows update and ofc, always fails
Do you mean that if you install .NET Framework 3.5, you always need to download something from windows update? Does this means you need to update your OS, or your windows and service package isn't patched up?
If you have any issue of updating the windows, please don't hesitate to ask here:
http://answers.microsoft.com/en-us/windows/forum/windows_update?tab=Threads
Will you always get error 0x800F0906 whatever method you use to install the NET Framework?
Please read a useful document first.
Installing the .NET Framework 3.5 on Windows 8 or 8.1
http://msdn.microsoft.com/en-us/library/hh506443(v=vs.110).aspx
From this article, we see the meanings of the 2 errors you encountered. 
0x800f0906:  “Windows couldn't connect to the Internet to download necessary files. Make sure that you're connected to the Internet, and click Retry to try again.
”0x800F081F:  “The changes could not be completed. Please reboot your computer and try again.”   
You can install .NET Framework 3.5 without internet using the DISM tool. If you can connect internet, you can install it on demand or enable it in control panel.
According to your description, you tried the DISM command-line tool but failed. Here are some friendly reminders.
1.Open a Command Prompt window with administrative credentials
2.Specifies the location of the files needed to restore the feature (in your post, the e:\sources\sxs directory). In other words, you need to put the installation media (ISO image or DVD) you installed Windows 8.1 from in the E driver.
Best regards,
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