[Fix] 0x800F0906 and 0x800F081F Error Messages While Installing .NET Framework 3.5 in Windows 8/8.1

You might be aware of the fact that Windows 8 and Windows 8.1 operating systems don't come with Microsoft .NET Framework 3.5 installed. But there are many 3rd party software programs which require .NET Framework 3.5 in your system. In such cases you need to install the .NET Framework 3.5 version in Windows 8/8.1 manually.

There are 2 ways to install .NET Framework 3.5 in Windows 8/8.1:

  • Online Install
  • Offline Install

In Online Install method, you install .NET Framework 3.5 using Control Panel -> Programs and Features -> Turn Windows features on or off option. In this method, Windows first downloads the setup files of .NET Framework 3.5 from Internet and then installs it in your computer system.

In Offline Install method, you use a built-in command to install .NET Framework 3.5 directly using Windows setup disc without requiring Internet connection as mentioned here. You can also use Microsoft .NET Framework 3.5 Offline Installer to automatically install .NET Framework 3.5 offline in Windows 8/8.1.


Recently we have received many comments and emails from our readers regarding a few error messages while installing .NET Framework 3.5 in Windows 8/8.1. Whenever users try to install .NET Framework 3.5 in Windows 8/8.1, they receive following error messages:

Error: 0x800F081F
The source files could not be found.


Error: 0x800F0906
The source files could not be downloaded.
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.


It doesn't matter whether they try online method or offline method, the same error messages and codes are shown by Windows.


Actually these error messages are coming due to following 3 updates recently released by Microsoft for .NET Framework 3.5:

  • KB2966826
  • KB2966827
  • KB2966828

Above mentioned updates are security updates for .NET Framework 3.5 in Windows 8.1 and Windows Server 2012 R2. These updates are applied via Windows Update regardless of whether you have .NET Framework 3.5 enabled or not. If these updates are installed in your system and you try to install .NET Framework 3.5, you'll receive 0x800F0906 and 0x800F081F error messages.


To fix this problem, you just need to uninstall these security updates from your system and then install .NET Framework 3.5. After successfully installing Framework version, you can reinstall the security updates without any problem.

So if you are also facing this problem, just follow these simple steps to fix the issue:

1. Open Control Panel, click on Programs and Features icon and then click on View installed updates link present in the left sidebar.

2. Now scroll down a little and look for following updates:

  • KB2966826
  • KB2966827
  • KB2966828

3. Once you find the updates, right-click on each update and select Uninstall option. Alternatively, you can double-click on the updates to directly uninstall them or click on Uninstall button present in the toolbar.


4. After uninstalling the updates, try to install .NET Framework 3.5 again using any method and this time it should install without any problem.

After installing NET Framework 3.5, you can reinstall the security updates using Windows Update.

Thanks to our reader "Steve" for sharing this solution...

NOTE 1: If you still face this problem, check out following alternative solution:

[Fix] Can't Install Microsoft .NET Framework 3.5 in Windows 8 and Later

NOTE 2: Microsoft has also released a new update KB3005628 to fix this issue. This new update automatically uninstalls the problematic updates KB2966827 and KB2966828 from computers.

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Posted in: Troubleshooting, Windows 8 / 8.1

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  • thanks a lot this was doing my head in

  • No, Never, Not at All.... I haven't noticed such problem yet.

  • How to enable .NET Framework 3.5 on Windows 8 in Offline Mode :

    The following are the steps to enable .NET Framework 3.5 (include .NET 2.0 and 3.0) feature in offline mode :

    Step 1 : Insert Windows 8 DVD or mount ISO image. The source of this feature can be found in folder E:\sources\sxs. (In this case E: the user’s drive letter on which the user has loaded Windows 8 Media.)

    Step 2 : Open CMD.EXE with Administrative Privileges.

    Step 3 : Run the following command Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:E:\sources\sxs /LimitAccess, and hit Enter.

    After completing the installation of .NET Framework 3.5 you can see that the feature is enabled.


  • I suppose installing the .NET 3.5 before updateing Windows 8 will work too .. but the normal right thing to do after w8 is installed is update 0_o .

  • !! Problem !!
    i appreciate your efforts VG but,
    on doing the activation using command prompt, i get the error message 0x800F081F
    (1st error in above list) but i noticed that the 2 updates are not installed on my pc (in fact i don't update my pc... 500 mb data pack :P )
    can somebody come up with another solution

  • OMG!!! You are a genius man. The solution worked perfectly. Thank you so much.

  • Thank you so much. Microsoft refused to help me with this issue unless I bought extra product support for 100+ bucks.

  • Genius!!!

  • i can not update my pc but i face this problem.please help me.i have a windows 8 64bit pc.

  • i sucessfully enable net framework 3.5 in my 32 bit pc but its not work in 64 bit windows 8.

  • pls help guys I have the same 0x800f081f in windows 8 which has no updates installed

  • Steve, writter of this solution, you deserve a beer (at least). Thanks.

  • For those of you, who do not see above security updates installed in your PC:

    My PC did not have either of the above updates installed, yet was behaving like a stubborn spouse.

    I saw that I had KB2966827 installed instead.

    I uninstalled it, and that worked for me.

  • mine is showin unknown command help plsss

  • 3 days and nights trying everything and it was just a damn update !!!!
    I don't know how to thank you for this.

    Btw it works also for Windows 2012 and the update to unistall is KB2966827.

    You saved my life....

  • )S: Server 2012
    Error: 0x800F081F Error
    repeatedly tried various cmd lines in CmdPrompt and PowerShell.. nothing.
    Copied files locally and downloaded to local source... nothing

    Found this thread.. removed KB2966827 attempted install through "Add Roless & Features"
    Thank you for posting this!

  • I can't find any of the updates asked to b uninstalled. I really need help!!!!! Plsss someone help me. HP 255 64 bits

  • i will try the error code is successfully installed but how to reinstall seccurity update again?

  • This is work perfectly. thanks for advice

  • Perfect!!!
    Racking my head, brand new server install. Couldnt install .net 3.5, with the exact same errors. Uninstalling KB2966827 fixed the problem. To bad this thread wasnt easier to find.

  • This solve the problem, i love you man.

  • WOW!!!!!!
    Works Works Works!!!!

  • Appreciate your help indeed. Worked like a charm.

  • This works like a charm. Thank you very much :)

  • Yesss. That's the solution of my problem.

  • It is awesome! :)

  • Unbelievable - I wasted 24 hours rebooting and trying DISM and copying files from the Windows DVD and all it needed was to uninstall KB2966827 on my Windows Server 2012 and .NET Framework went from source not found to installing just like that!

    Thanks so much

  • My 2012R2 server only had the KB2966828 installed. Removing this one solved the problem.
    Thanks a lot!

  • Thanks a lot !!!! it worked !!!!

  • U saved my life ;) ......

  • Thank you this worked for me!

    Is Microsoft going to fix this? It seems like these updates should NOT be installing until .net 3.5 has been installed....

  • Thank you. I want to have your children :-)

  • Thank you mate. Been bang my head on this for 3 hours. Couldn't work out what i was doing wrong.

  • Thank you very much! I couldn't install .Net3.5 online or offline. However, the only security update I had was the middle one (KB2966827) on my server 2012. But uninstalling it worked brilliantly.

  • removing the security updates worked!! did my head in for about 1 hour.

  • Works on Win8.1 and Server 2012! Because of this problem many products by Autodesk failed to install some mislead error message saying it need an internet connection to run an update. Wish I found this article first. All Microsoft methods were useless and a waste of 3 days.

  • Had only KB2966828 installed - removed that and .Net3.5 installed nicely. Thanks for this tip !

  • GREAT!!!!!!

  • You are the one

  • Hi Thanks for this tip, in my scenario i had Server 2012 R2 and only had the KB2966828 installed out of the 3 mentioned, but was not able to run "DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:E:\sources\sxs". Ut would fail around 66%.

    After uninstalling the KB listed installed successfully :)... (i rebooted after uninstall the KB)

    Thanks again, spent a couple of hours trying to fix!

  • TOP!!!!!!

  • Please help!
    i have the Error: 0x800F0906
    The source files could not be downloaded.
    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.

    but when I check for the solution like you said, there are no
    what do i do?

  • I have to agree this posting is a little known gem. I was going crazy because I usually do the dvd install if the web installer doesn't work. But this time neither were working until I found the bad kb. Thanks a bunch!

  • Thanks a lot. I was looking for a solution for past 2 days. Finally I got it. Thanks a ton.

  • .Net Framework4 has not been installed because:
    HRESULT 0xc8000222
    Please I need solution, someone should help me because it's giving me real headache

  • Thank you so much!!

    This fixed my problem with installing 3.5 .net framework on my Windows 8 pro laptop!


  • I really thank God in your life Man and i appreciate this.. Thanks

  • Thank you so much!!

    This fixed my problem with installing 3.5 .net framework on my Windows 8 pro

  • ขอบคุณมากๆ ครับ

  • I don't have any updates installed but still getting error

  • work 1000%


  • Thank you, it worked for me on Server 2012 the 2nd update was installed.

  • THIS! Thanks a lot, this was the most helpful website in weeks!

  • uninstalled the KB2966827...WOW...Framework 3.5 installed in 1 minute...THANKS TO ALL

  • Thank you. you did a great job.

  • Works perfectly. Thanks a lot...

  • Anybody Please help me???

    I have window 8.1 i tried to install .net 3.5 but show error code 0x800f0906. and i also run DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:E:\sources\sxs error show 87.

    it's very urgent for me for install software in which having .net platform.
    Please help me As Soon as possible.

  • A big thank you to you, after several hours past to search a solution I finally solved my problem thanks to your indications.

  • it's install successful but doesn't work on my laptop. when install some software it's required to install Microsoft net framework again. pls help me.....


    After trying every solution I could find, this one finally did the trick. I only had the KB2966828 installed.


  • Thank you! Saved me hours :-)
    In my case I had KB2966828 installed. After removal .net 3.5 worked normal.

  • Genius! I spent 4 days to solve this problem, and found on google thousands of solutions but only this works. THANKS VEEERY MUCH!!!

  • You are my hero. :D
    Deleting KB2966827 solved my problem.
    Thanks a lot.

  • You are the best. thank you very much.

  • Thank you Maaan

  • You are awesome. I was working on this for about 2 hours trying to get it going, and this got it. Thanks a ton.

  • Thanks! Great tip, worked for me after removing KB2966828 on my Surface Pro 3.
    Note: Installation was done via dism on Admin console. Didn't work when using the Enable Windows Feature in Control Panel.


  • Finally one manual which did work!, thanx !

  • Perfect. Many thanks. Worked like you said... saved me a lot of time.....!!!!

  • very very thanks

  • Dude,

    I have been banging my head all week trying to figure this out. Not even Microsoft site has it right.

    You did it.

    I was working on Azure VMs and using Windows Server 2012 R2 DataCenter Edition.

    I had only one update KB66828, removed it and tried re-installing using DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:F:\sources\sxs and bammm, it worked.

    Thanks a ton !

  • I can not uninstall the KB2966828. In the control panel, when I select KB2966828, disappears the uninstall button. If I try from the command prompt, I receive an error message that says the the component for the security cannot be Uninstalled.

  • Looks like Microsoft released another update to fix this issue (fail installing .net 3.5 even with sources), so just update your server and the installation will go smooth :D Anyway good thread!

  • thank you very much. the solution with uninstalling win updates worked just fine!

  • Finally it worked! Thank you so much!

  • Sadly none of the solutions that have been posted here work for me. I have three Surface Pro 3 with windows Proff 8.1 that has the same issue. .NET 3.5 will not install. I´ve tried both via DISM, program and features and via full install setup.
    I have tried to uninstall every single winupdate on the machine and then install via DISM, but that didn´t help either. I even tried to install all three KB-updates (KB2966826-8) to see if I can uninstall them to get rid of potential dll-files that could be interfere with the .net 3.5 setup.

    So I then decided to wipe it clean via windows own restore system guide. But it doesn´t even work after I have done a clean windows install.
    Immediately after windows installed I tried to enable the .NET 3.5 feature, and of course DISM didn´t work either.

    I have called MS support to get some assisance, but I guess they will call back in a few days or so.

  • Uninstalled the KB2966828 and the NetFx3 enabled just fine.

  • In my experience, the online install work, even if all the updates are installed on the system. So it worth trying also the online installer if you have no problem with it.

  • Same issue that Patrik, surface pro 3 and i have tried all write here without suscess. Patrik i wait you help

  • Gonzalo, no worries. I will report back after I´ve talked to a MS technician. I really hope they have a solution for this since my colleagues have a bunch of programs that requires .NET 3.5. One example is our DPM client, it cannot run without it.

  • Exellent! you made my day, man. Thanks a lot!

  • none at option. the problem is not solved .windows 10

  • I have not received any call from MS support yet, not that I am surprised though :/
    Anyway, I have solved the issue after many hours. I found a setting in the local computer policy. Follow my instructions below.


    Hope this helps for some of you guys. It could be that we are running WSUS at our company, but it´s just a guess. I don't wanna spend another minute with this problem :P

  • Thanks a bunch for this!
    I tried absolutely everything from M$... DISM install, DISM healthcheck, DISM repair, change GPO regarding Win Update. Proxy to make sure I could reach Win Update, SxS on a folder, on the server, ISOfile mounted... nothing worked.

    Then finally this, and I found KB2966828 on my server. Worked on the first go after removing it :)

  • Had this issue with a Surface Pro3 joined to our Domain.

    Could not install .Net 3.5/2 at all.
    Ran the Patch from here support.microsoft.com/kb/3005628 - But that didn't work.

    Could see the KB2966826 update in the installed updates, but could not uninstall it.

    What worked for me:
    Dis-joined my system from the Domain.
    Ran the KB3005628 fix
    Verified the KN2966826, 7 or 8 Security updates were gone.
    Install the .Net 3.5 feature from Programs and Features.
    Installed the Security updates from Microsoft

  • I didn't have any of the updates mentioned on this page installed. I did uninstall KB2966804. This corrected my issue and allowed me to install via command-line and DVD.

  • MCSE / MCITP here.

    Had tried all of the other fixes mentioned to no avail. Removing the mentioned updates and installing via DSIM worked like a champ.

    Thanks for posting!

  • Okay Fix, Thank Alot bro ! =D

  • For easy installation.

    To configure the Group Policy setting, follow these steps:
    Start the Local Group Policy Editor or Group Policy Management Console.

    Windows 8 and Windows Server 2012: Point to the upper-right corner of the screen, click Search, type group policy, click Settings, and then click Edit group policy.

    Windows 8.1 and Windows Server 2012 R2: Point to the upper-right corner of the screen, click Search, type group policy, and then click Edit group policy.

    Expand Computer Configuration, expand Administrative Templates, and then select System. The screen shot for this step is listed below.

    Open the Specify settings for optional component installation and component repair Group Policy setting, and then select Enabled. The screen shot for this step is listed below.

    If you want to specify an alternative source file, in the Alternate source file path box, specify a fully qualified path of a shared folder that contains the contents of the \sources\sxs folder from the installation media.
    Example of a shared folder path: \\server_name\share\Win8sxs
    Or, specify a WIM file. To specify a WIM file as an alternative source file location, add the prefix WIM: to the path, and then add the index of the image that you want to use in the WIM file as a suffix.
    Example of a WIM file path: WIM:\\server_name\share\install.wim:3
    Note In this example, 3 represents the index of the image in which the feature files are found.
    If it is applicable to do this, select the Contact Windows Update directly to download repair content instead of Windows Server Update Services (WSUS) check box.
    Tap or click OK.
    At an elevated command prompt, type the following command, and then press Enter to apply the policy immediately:
    gpupdate /force


    Visit support.microsoft.com/kb/2734782

  • Grazie!

  • thank you man! thank you! :*
    your're amazing! -very amazing!!! ::))))

  • You are amazing for over 4 days, after uninstall the security update Whola!!! Net 3.5 installed, thanks for this tutorial.

  • Worked like charm. Thanks a lot :)

  • I can't find the /sources/sxs folder,I need your help to start installing Net frame 3.5

  • thank u so much for this information

  • i cant find the source folder. all i found is C:\Windows\WinSxS which looks kinda same to sxs.

  • Seams Microsoft released an update to fix the problem:
    Update for the .NET Framework 3.5 on Windows 8, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2


    This update resolves an issue that prevents the optional Microsoft .NET Framework 3.5 feature from being enabled after you install security update 2966827 or 2966828 (described in Microsoft Security Bulletin MS14-046) for the Microsoft .NET Framework 3.5.

  • Thank you so much. It works!

  • thank you soooooooooooooooooooooooooooo much man. its Works. thank you very much. im glad. this is best answer to my question. very nice.
    excuse me for my bad English.

  • Thanks a lot man! It saved me a lot of time and effort. :)

  • oh! yes it worked thanx a lot dear.

  • i have no updates whatsoever but the problem still exists i don't understand why i tried dism no luck i cant update it through the internet because it isnt fast enough so please help anyone

  • Tankx for every tyn but I have tried every instruction here but it's nt working I'm stil receiving error code:0x800f0906.I'm using Brian computer pls help me

  • thanks!

    Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:E:\sources\sxs /LimitAccess

    it's work perfect for me!

  • Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:E:\sources\sxs /LimitAccess
    Worked for me! Thank you!

  • Download donetfx35.exe and change source to its Location
    e.g.-Dism /online /enablefeature /featurename:NetFx3 /All /Source:H:\Software\Netframework\3.5

  • Thank you so much. I had KB2966828 installed. I removed it and it works awesome.

  • I have windows 8 (*64 bit)
    I try all above trying ..... I fail
    windows 8 need paid copy .... this true

  • I have tried everything above on a clients 8.1 Pro 64 Bit laptop and still getting the same error. They are running on a Domain Controller but not sure if this is causing more problems. I have tried installing from the Disc to no avail.

    Any help would be greatly appreciated.

  • Very cool, quick and dirty solution. 100% genius. Thank You very much from good old Germany. :-)

  • I don't install the .net framework 3.5(includes2.0and3.0) on windows 8.1 pro please give some help

  • Hi, I had the 0x800F081F error message on my new Surface Pro 3 with Windows 8.1 Pro. Tried everything above, nothing worked. 14 updates listet, none of them named KB2966826, 27 or 28, and none of them removable. The 3005628 fix neither worked.
    What finally worked for me was to make a clean reinstall from the machine without using a media: Swipe in from the right edge of the screen, tap Settings, and then tap Change PC settings, choose Update and recovery, then Recovery, choose Remove everything and reinstall Windows. Then during reinstall select not to use automatic updates.
    Then connect to the Internet and activate the .net framework the standard way: Control Panel, click Programs, and then click Turn Windows features on or off. The first time I tried, I got the error message 0x800F0906 no Internet connection. But the second time I tried to turn on the Framework 3.5 in Control Panel it worked flawlessly!

  • Thank you Patrik! Surface Pro 3 running 8.1 on a domain with WSUS running. If this is what you have, follow Patrik's advice above!

  • OMG dude you are awesome. i been trying to use DISM no luck but this works

  • Patrik resolution above fixed my issue thanks man. I did not see the updates that were supposed to be removed but after doing patriks suggestion listed below it worked. Thanks man

  • This 3 windows update that you can says are not found in my pc...... So plz tell Mike some solution.

  • Seth - After I tried removing the KB296682[6-8], I still received the error. Changing the settings using gpedit.msc fixed my problem. Thanks!


  • I looked for the updates that required to b uninstalled but i couldnt find those updates since i just installed win8 on my P.C, after couple of trials,i successfully installed .NET 3.5
    For those that couldnt find d updates on their p.c, try this method

    1. Insert your win8 disc and navigate to sources,open d sources folder,u wil find sxs folder. Now copy this 'sxs' folder to following location:
    C: \ Temp
    (create d 'TEMP' folder yourself if u cant find 'TEMP' on your local disk and paste d 'sxs' folder in there)

    2.Next run the Command Prompt as administrator, and type the following command:

    Dism /online /enable-feature /featurename:NetFX3 /All /Source:c:\temp\sxs /LimitAccess

    and hit enter.

    That’s it!
    Now reboot. You will now also be able to run software or app which requires.NET(like AutoCAD. etc), without any problems.

  • I had this problem, but didn't have any of the 3 specified updates installed. I uninstalled a whole lot of Windows 8.1 updates, and eventually I was able to install .NET 3.5. Unfortunately, I don't know exactly which update was the culprit...

  • did almost everything.. even the new trick by Patrick (thanks man!), but still the same old 0x800f081f error... no update files...

  • thank s to Steve for netframework 3.5 solution

  • I have Win 8.1 (with update 1) these three updates cannot be located or shown please help

  • Works like a charm ;)
    Thanks man!

  • Thank you so much! This works! ;D

  • Sir i have windows 8.1 pro x86 and cannot install net framework 3.5 in it and also searched for these updates but didnt found anything *.KB2966826

  • Sir i have windows 8.1 pro x86 and cannot install net framework 3.5 in it and also searched for these updates but didnt found anything .KB2966826,

  • When i go to "view installed updates" it says that "no updates are installed on this computer". but still i am unable to install .NET Framework 3.5.

  • I have not found such updates...
    now what I have to do

  • i appreciate your efforts VG but,
    on doing the activation using command prompt, i get the error message 0x800F081F
    (1st error in above list) but i noticed that the 2 updates are not installed on my pc (in fact i don't update my pc... 500 mb data pack :P )
    can somebody come up with another solution

  • VG

    Did you try following?


  • Hi folks and VG, to be honest I already tried all the stated methods here in this thread. The DISM, editing group policy, Downloading the Offline version of 3.5 SP1 and the last thing is I checked if the said updates are installed in my machine (none of them are installed) but all of them are showing the same error (0x800F0906). Im screwed up. Any help will be highly appreciated

  • Patrik's solution is the only one that worked for me!

    Many thanks!

  • Thanks a lot for your useful tutorial. only this solution helped me.

    Best Regards

  • Thank U dude!!!

  • somebdy as sharped me! keep logged to this web know as the world to solve others problems! it worked!!!!!!!!!

  • If everything else fails, this link worked for me. Windows 8 64bit.
    See Answer section (after a long Question)


  • For those who are joined to a DOMAIN an option will be to remove the WSUS Role on the domain controller or SBS environment.

    For me this was working on Windows 8.1 x64, domain joined Surface Pro 3

  • There is a fixit solution for this here:

  • thank you very much.....

  • Thanks guys, fantasticwork

  • I do not have disk right now! But I have dotnet35 full package. How can I install it?

  • Remove the computer from the domain and make install mode from the command line .

  • For those of you who can't find the update files, here is what worked for me:

    a. PressWindows key +X.
    b. Click oncommand Prompt (Administrator).

    On the open Command Prompt window copy and paste the commands (all at once) –

    net stop wuauserv

    net stop cryptSvc

    net stop bits

    net stop msiserver

    ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

    ren C:\Windows\System32\catroot2 catroot2.old

    net start wuauserv

    net start cryptSvc

    net start bits

    net start msiserver

    c. Wait for the process to complete.
    d. Close the Command Prompt.
    Now, try to install the updates. Check if it helps.

  • thanx a lot dud ...my head screwed up coz of this problem even microsoft doesnt helped me for this error............... thanx

  • I have Error: 0x800F081F.
    I cannot see the:


    So what can I do?

  • thanks, its usefull

  • I have problem Error: 0x800f0906

    not found following code in installed updates


  • Tried everything here on my Win8.1 ENT box and it still won't install. I get the same errors regardless of what combo I've listed above. I must point out that some of our systems this did work but we still have a few (12+) that no matter what we try it fails. So far we show that none of these boxes had KB2966826,7 or 8. Do you have any other solutions?

  • i dont have

    and i am getting error message Error: 0x800F081F what will be alternate solution for this
    please help somebody

  • Thanks a lot for your wonderful help. It has been a problem for me to install the .NET framework in my Win 8 OS

  • I dont have

    and i am getting error message Error: 0x800F081F what will be alternate solution for this
    please help somebody

  • Thank you. This was exactly the problem.

  • Thank you.i had kb2966828 and after uninstalling it,dotnet3.5 installed seamlessly.GOD bless you.

  • If you dont have the updates installed and still recieve the error, you might have a language pack installed or a different language install disc.

  • Thank you! uninstalling updates worked

  • Just delete KB2966828 update and install Framework from Features
    Control Panel -> Programs -> Turn Windows Features on or off

  • Nobody here is providing with the solution for the case of no such security updates installed. What do we do then..?? Urgent... Need Help!!!

  • Thank you !
    Just delete KB2966827
    I Love You!!!!!!!!!!!!!!!

  • i have tried all sorts of approaches posted here but am getting no help. what does it cost microsoft to have this feature inbuit in the windows installation. i have spent days without working because am failing to install AutoCAD. please save our time.... thanks

  • thankx 4 sharing bro.. love you.. thats work 100%

  • Sir it is saying dism log canot be found

  • Lolz... I do not have any of the above security updates on my computer, and this .net framework still doesn't get install on my computer. I had also tried the solution provided by Patrick of trying enabling option component installation and component repair, still it did not work. I think that I might have to clean install my windows again, and then I'll install these .net frame works. only then I should update my windows updates.

  • Thank you so very much for this fix. Racking my brain for days. This worked incredibly.

  • I have not KB2966826, KB2966827, and KB2966828. I have Error: 0x800F0906. So plz help me...

  • Same problem as many others - I'm not seeing those three updates, and there is nothing I can seem to do to get .net to install properly.

  • i have 0x800f0906 code problem
    how to solve it

  • wow dear thx for u r nice explain awsome

  • Hi i have none of the above security updates that i can delete and im still receiving the error 800F0906, please help!

  • problem!!!!!!hi thanks for your efforts but I applied all the steps even I uninstalled the updates but still it didn't work also I changed the setting of group policy so what should I do???please need help

  • I do not have kb2966826 kb2966827 kb2966828 help me.....

  • Hi i have a problem, in the installed updates i didn't have KB2966826
    KB2966828 .. but i have KB2565063 . is any problem will arrive while uninstalling that update?...

  • Thank you so much buddies.

  • Please help!
    i have the Error: 0x800F0906
    The source files could not be downloaded.
    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.

    but when I check for the solution like you said, there are no
    what do i do?

  • I don't have
    KB2966828 and i don't have a win8 cd. how could i install .net framework 3.5?
    HELP ME!!!!!

  • Worked like a charm! Thanks.

  • I dont have
    any of these updates
    ...what shall i do.....plzz help!!!!!

  • Please help me, I have none of these updates that were listed up above. I still have the error: 0x800F0906. I have tried a lot of things and I am very tech savy. But I can not figure this out. This is my business computer and I need it to run my business programs. Thank you.

  • VG you are Genius in upper case it has taken me one week but for you help I've been able to solve it. thanks again BOSS

  • hello, i also don't have windows update KB2966826 KB2966827 KB2966828. Pls i need urgent help immediately.

  • ThnX. It's Work but If It was Doesn't work thanks too for all that :)

  • i have other type of windows update like (KB2894...)

  • I didn't have either update KB2966826 or KB2966828 installed . Luckily, Microsoft created a patch that allows .net 3.5 to install properly. Just scroll down here and download the version for your OS support.microsoft.com/en-us/kb/3005628

  • Guys turn on auto update then install it will work fine

  • thanks bro. it's amazing idea .

    i applied this process in window 10 and then its working..

  • I can't find anything helpful here...there's no KB2966826, KB2966827, KB2966828. i can't install 3.5 tru online and offline method..please help i'm doing everything in your tutorial but nothing happens..damn...windows 8 64 bit.. it did work when i install 32 bit..please help

  • Man u are a genius,it worked like a ninja....u deserve a slice of bread..hheheh

  • I have checked I don't have those 3 updates and I can't use windows updates due to the server in question being in a DMZ network. The additional update fix doesn't do anything. It seems Microsoft have unloaded a broken version of windows into the market.

  • I need help !
    i just have :

    which one should i remove ....

  • Please help me! I'm using windows 8 pro. And When I go to Control Panel > Programs > View Installed Updates >
    There is nothing! It says no updates installed! I tried the Group Policy Solution. But Nothing happened. How can I remove the security updates, if I don't have them :( Plz help

  • i dont have KB296682 KB2966827 KB2966828 but im still getting that error

  • i have windows 10 (x64)
    DISM is not working. It gives error:14003
    reference assembly is not installed in your system.

    Also i don't have KB296682 KB2966827 KB2966828 but im still getting that error.
    Also restored health and follow the procedure. Still it is not able to install .net framework 3.5
    What should I do? plllzzz help...

  • tried everything , but have no KB in update list .
    Still have the same problem / win 8.1 32 Bit

    I am getting error message Error: 0x800F081F what will be alternate solution for this

  • You saved my life!!! thanks

  • In windows 10 the security update file name is 3081444. But uninstalling it din't help. Thanks anyway.

  • For those that tried everything and do not have KB updates required to be deleted. Found a simple solution:

    Change the registry key value for 'UseWUServer' from 1 to 0. This key is under registry location:

    After this is done, just enable NetFX3.5 in features and it will install fine. I didn't even restart, but could do just incase! Put the registry value back to 1 after you have done with the install.

  • You saved my life!!! thanks

  • its not work in windows 8 64bit.Please solve it
    its showing Error-0x800f081f

  • i cant find sources/sxs folder pls helppppppp

  • I had the same error on Windows 10 and fixed it by running the following in cmd:

    DISM /Online /Cleanup-image /RestoreHealth /source:WIM:E:\sources\Install.wim:1 /LimitAccess

  • Some peoples having problem to install .net framework 3.5 but does not have the security update listed, i also facing same problem. When i looked back to my cmd coding then i realize that i make a wrong spelling, suppose it should "sources \sxs" but i wrote it "source \sxs".

  • Hi,

    I am trying to install .Net Framework 3.5 in my windows 10 laptop using bootable windows 10

    pendrive(F). I am getting and error as follows:

    An error occurred while installing Microsoft.NET Framework 3.5. Please verify the disk and
    installation source path when try again

    I had given the path as F:\ Installation Source: F:\sources\sxs

    Please help me

    Thanks in advance

  • VG

    ^^ Try following command:

    Dism /online /enable-feature /featurename:NetFx3 /All /Source:F:\sources\sxs /LimitAccess

    And replace F:\sources\sxs with the correct drive letter of your disk drive.

  • hey people i finally solve this f%#&ing poblem :)
    you need to do this: open cmd and paste this (all at once) and then go to control panel-and from there activate framework 3.5, windows update will install framework 3.5 and thats all. good luck (sorry my english is not good)

    net stop wuauserv

    net stop cryptSvc

    net stop bits

    net stop msiserver

    ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

    ren C:\Windows\System32\catroot2 catroot2.old

    net start wuauserv

    net start cryptSvc

    net start bits

    net start msiserver

    c. Wait for the process to complete.
    d. Close the Command Prompt.

  • VG

    ^^ This is a part of our Windows Update Reset script:


  • Thanks

    This solution works


  • @ Patrik , Thanks a lot! I had same problem but none of 3 updates installed on my win8.1 pro. The issue was solved using your recommendation >GroupPolicy.

  • atlast......man ive suffered but thank God .....it has worked

  • thanks a lot i fixed my problem

  • still not working

  • i cant find those security update t for .NET Framework 3.5:


  • thx alot. my problem is solved. i unistall KB2966828 and then try to install successfully.

  • This is vinod from Dubai...Super Duper Tool...I have wasted my 2 days..this tool fixed my issue with in 5 minutes..thanks you so much..

  • i dint have any messages shown by you
    and i dint have any windows installation disc and no sxs folder
    but then also can i install net framework 3.5 in my pc windows 8.1 pro.
    Plzz sir help me solving this big issue

  • Thank you very much

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