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
    2014-09-01T22:20:25+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/

    Confirmed that it fixed the issue for me as well.

    Note that I did initially consider trying the "uninstall 4.5, install 3.5, install 4.5" suggestion made by someone else, but the "Turn Windows features on or off" list only showed something called ".NET Framework 4.5 Advanced Services" and it wasn't clear to me whether that was the .NET 4.5 that was intended (if I understand correctly, that doesn't really uninstall 4.5 entirely, just the "advanced services" for 4.5).

    I should also note that uninstalling the two updates described did not require a reboot, nor did installing .NET 3.5. Finally, I also note that these updates were still available once I'd installed .NET 3.5, so assuming they are actually important, you don't have to do without them, except just long enough to get .NET 3.5 installed. :)

    For what it's worth, I've opened a bug report on Microsoft Connect. As far as I know, no one from Microsoft will bother reading any problem reports here, but there's a possibility they will notice the bug report on Connect. The chances of it getting fixed are much improved if a large number of people up-vote the bug report.

    So if you showed up here to get the fix, also go to Connect and up-vote the bug report, here:

    https://connect.microsoft.com/VisualStudio/feedbackdetail/view/961534

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  2. Anonymous
    2014-09-03T00:53:46+00:00

    Wow! That worked perfectly for me! I just spent 2 hours trying to figure out what the heck was wrong. Thank you!

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  3. Anonymous
    2014-09-03T06:39:53+00:00

    It worked beautifully. Thank you so much for saving my day!

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  4. Anonymous
    2014-09-03T17:05:17+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/

    Incredible how microsoft is not aware of these type of incompatibility and issues, Chris thanks for your help. Needed to install many sofware dependent on .NET 3.5

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