.Net Framework 3.5 fails to install with error code 0x800F081F

Anonymous
2013-01-25T19:11:49+00:00

Original Title: Error installing .net framework 3.5 sp1

I did a refresh of my install of windows 8 pro (64 bit), because Weather and several other apps were failing (they started, then the main window closed, but the small window stayed in the task list to the left; event viewer gave access permissions errors).

This seemed to sort most of the apps BUT now I cannot re-install many programs as they need .net framework 3.5 and this fails to install with error 0x800F081F. I even tried downloading the full installer and running locally but it still gives the same error!

I need the framework to work with OpenXML development, a large part of my work.

(I should also point out the refresh says most apps are retained - it fails to mention all applications are removed!)

Windows for home | Previous Windows versions | Apps

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments
Answer accepted by question author
Anonymous
2013-01-26T07:12:12+00:00

Hi Andy,

Thank you for posting your query in Microsoft Community and giving us an opportunity to assist you.

From the issue description, you are facing issues with installing .Net Framework 3.5 and receiving error code 0x800F081F.

There is a Microsoft Knowledge Base article that provides methods to troubleshoot this issue. I would suggest that you visit the link and use the methods to resolve the issue.

Error codes when you try to install the .NET Framework 3.5 in Windows 8 or in Windows Server 2012

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

You may also refer this link for more information:

Installing the .NET Framework 3.5 on Windows 8

http://msdn.microsoft.com/en-us/library/hh506443.aspx

Hope this information helps. Let us know if you need any further assistance related to Windows.

Was this answer helpful?

100+ people found this answer helpful.
0 comments

80 additional answers

Sort by: Newest
Most helpful Newest Oldest
  1. Anonymous
    2016-02-26T12:17:45+00:00

    It,s the installation program for MS Dynamics Ax that want .net 3.5 in my case... :-(

    Was this answer helpful?

    0 comments
  2. Anonymous
    2015-10-30T23:06:56+00:00

    Can someone just stop answering these questions from the knowledge base. There is a PROBLEM with Windows 10! .NET 3.5 will not be installed in any way (file cannot be found) without the DVD or uninstalling and installing Windows 8.1, then .NET 3.5, then Windows 10. Push this up the chain and get someone to fix it!

    Was this answer helpful?

    0 comments
  3. Anonymous
    2015-10-03T22:51:30+00:00

    In my case it was the windows update service disabled. (I did that before as step in some optimizations but I just forgot about that).

    So simply I went to Services -> select Windows Update -> right click Properties -> General tab -> change startup type to Automatic or Manual instead of Disabled then click Start button. Hence I could install It without errors.

    Was this answer helpful?

    0 comments
  4. Anonymous
    2015-09-23T09:06:57+00:00

    None of the solutions presented worked for me, however, after digging around in the registry I found the following:

    DisableWindowsUpdateAccess (Binary - 1) at HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate

    So, try the following:

    1. Delete the key: HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate
    2. Open CMD as administrator
    3. net stop wuauserv
    4. net start wuauserv
    5. Download and install this: https://www.microsoft.com/en-gb/download/details.aspx?id=21

    This seemed to do the trick for me.

    Hope this helps a few others!

    This actually worked for me too! At least my windows update is working now :)

    Was this answer helpful?

    0 comments