Can't enable or install .NET Framework 3.5 in Windows 8.1 PRO 64-bit

Anonymous
2014-02-08T14:22:54+00:00

I continually receive the message in a dialogue that

"Windows couldn't complete the requested changes.

The system cannot find the file specified.

Error code: 0x80070002"

I have not been able to find my way around it.  Running on a 4770K system with fresh install, only user, and with Admin privileges, and usually running Command and many other programs as Administrator.

Can't turn 3.5 on through Control Panel "Turn Windows features on or off", although .NET Framework 4.5 Advanced Services IS enabled.

No success either, using installers provided with programs that require that version of .NET.  As they do require it, I am hoping to get this resolved.

No success with DISM method of scanhealth & restorehealth, although these run OK.

No success with DISM method to install from distribuion CD, mounted ISO, or folder Sources\sxs folder copied to hard drive (including using /LimitAccess switch).

I haven't been able to figure out from looking at the DISM and CBS logs what might be missing.

No success changing server or path in Administrative Templates, etc. regarding Windows Update, for installing components.

No success from .NET full download or stub from Microsoft website.

Microsoft's Windows Update fix-it tool doesn't come up with a solution, either, or point to the culprit with any useful detail.

I've tried to be reasonably methodical in working this out, but I still don't seem to be getting anywhere.

ANY SUGGESTIONS, PLEASE?

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Anonymous
2017-04-28T11:28:29+00:00

Hi everyone,

I solved the problem .Just copy  the single  file from sxs folder of windows 10 dvd or iso to your local drive.

Extract this file using winrar.

Now run DISM command wih administrator privilege  with extracted folder as a source path

Ex.

dism / online /Enable-Feature /featurename:NetFx3 /All /Source:D:Sources\sxs

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  1. Anonymous
    2014-08-30T06:23:29+00:00

    Found link that identifies two Windows Updates as the problem if DISM and the offline installer do not work.  Uninstall  KB2966826 and KB2966828, then try installing 3.5 from programs and features.  It worked for me.

    http://linustechtips.com/main/topic/201700-cant-install-net-framework-35-on-a-windows-81-computer/

    That was all I had to do, I appreciate this. Hope anyone else having trouble with net framework 3.0 not installing will find this.

    Did you re-install KB2966826 and KB2966828,after you got framework?

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  2. Anonymous
    2014-08-30T06:18:14+00:00

    Found link that identifies two Windows Updates as the problem if DISM and the offline installer do not work.  Uninstall  KB2966826 and KB2966828, then try installing 3.5 from programs and features.  It worked for me.

    http://linustechtips.com/main/topic/201700-cant-install-net-framework-35-on-a-windows-81-computer/

    Sorry if iv sound dumb but how does one uninstall B2966826 and KB2966828 please help thanks

    edit: got it from control panel --> uninstall a program, also should we re install it?

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  3. Anonymous
    2014-08-30T04:05:27+00:00

    Found link that identifies two Windows Updates as the problem if DISM and the offline installer do not work.  Uninstall  KB2966826 and KB2966828, then try installing 3.5 from programs and features.  It worked for me.

    http://linustechtips.com/main/topic/201700-cant-install-net-framework-35-on-a-windows-81-computer/

    Ok, so after scrubbing for every possible solution, I had totally misread this and didn't realize it was the solution. I accidentally did what it wanted, only when I went to write may answer here did I realized I was just misreading it.

    To clarify, when this will fix the issue: DISM can't find the source files, downloading from update immediately (or almost immediately) fails to download, throwing the error.

    I would personally suggest putting the word UNINSTALL as bold and underlined to make it not get overlooked by people skimming like me.

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  4. Anonymous
    2014-08-28T21:41:22+00:00

    Uninstall of these two updates combined with the offline install method finally solved this problem for me!

    Copied the sxs-folder from Win ISO image to c:\

    and ran DISM command from Administrative cmd-prompt:

    DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:c:\sxs

    Hope this can help someone else as well!

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