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

Question

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!)

Answer 1

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.

Answer 2

Hi Imran,

I have tried the command prompt solution, multiple reboots, the windows features solutions, and wiping the software and reinstalling it all, i still am left with the error code 0x800F081F.

Do i need to put the source files in a specific folder and cite that in a command prompt code? if so where are these source files? I dont understand why nothing thats recommended works. I, like Mr. Marlow, need to use certain development tools that require NET 3.5

This problem only began after I too refreshed my PC because of initial problems with the OS. the problems are solved (mostly, messaging still doesnt work at all).

Any ideas? the above links were unhelpful as well as much time scouring forums.

Answer 3

Hi all,

I'd like to agree with  "ColinZarzour".

 I have tried several solutions without having the problem solved. In all attempts I have the error code [0x800F081F] shows up with "Windows couldn't find required files to complete the requested changes. Make sure zou're connected to Internet, and try again". Amazingly! I'm connected to Internet during the installation.

This is really strange!

Unfortunately, I have some application programs require the .NET 3.5 to execute.

D. F.

Answer 4

http://windows.microsoft.com/en-us/windows-8/windows-update-error-0x800f081f I have just tried this and it work with me try it if u want

Answer 5

This behavior can also be caused by a system administrator who configures the computer to use Windows Server Update Services (WSUS) instead of the Microsoft Windows Update server for servicing. In this case, contact your system administrator and request that they enable the Specify settings for optional component installation and component repair Group Policy setting and configure the Alternate source file path value or select the Contact Windows Update directly to download repair content instead of Windows Server Update Services (WSUS) option.

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, clickSettings, 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 WMI file path: WIM:\server_name\share\install.wim:3NoteIn 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