Windows 10: Offline install of .Net 3.5 fails on Windows 10 with error 0x800F081F, the source files...

I have an offline Windows 10 system and am trying to install .Net 3.5.1. I got the CAB file from a windows 10 ISO I just downloaded and copied the CAB file to c:\windows. I ran the command: Dism /online /enable-feature /featurename:NetFX3 /All /Source:%windir% /LimitAccess I get a message the 3.5 is enabled but I also get the error: error 0x800f081f The source files could not be found Not understanding this as I told it where the source is. Possibly not the same version of Windows 10 as I did not do the install. How can I get around this or fix this error? Ty. ...ar

:)

 

net 3.5 install

Hi Bobert,

Error 0x800f0906 could have happened due to source of files could not be downloaded. To resolve your issue, we suggest that you follow the steps provided on this link:

.NET Framework 3.5 installation error: 0x800F0906, 0x800F081F, 0x800F0907.

Regards.

 

Installing .NET 3.5 offline

I searched on the web and I am trying to follow guides on how to install .NET 3.5 on an offline machine. Steps that I followed:

1. Download official Windows 10 .iso
   
2. Mount it on D: drive
   File explorer which shows mounted Windows 10
   
3. Run dism /online /enable-feature /featurename:NetFx3 /All /Source:\sources\sxs /LimitAccess
   
4. What I get back:
   

Error: 0x800f081f The source files could not be found. Use the "Source" option to specify the location of the files that are required to restore the feature.

I cannot solve this error, can someone help me out? I thought that feature naming might be bad, I opened mounted Windows .iso and navigated to D:\sources\sxs where I was able to find 4 files:

File explorer showing files

 

Error: 0x800f081f while installing .NET Framework 3.5 in Windows 10

Hi,



Thank you for writing to Microsoft Community Forums.



I understand that you receive an error, ‘0x800f081f’ when trying to install .NET Framework using DISM command. I’ll certainly help you with the issue.



I would suggest you to refer the steps mentioned by Andre Da Costa Replied on November 27, 2017
from the thread
Install .NET 3.5 on Windows 10 Home from ISO file and see if that helps.



You may also want to refer the article
NET Framework 3.5 installation error: 0x800F0906, 0x800F081F, 0x800F0907.



You can enable the .NET Framework 3.5 through the Windows Control Panel. This option requires an Internet connection. Refer the article on

Install the .NET Framework 3.5 on Windows 10, Windows 8.1, and Windows 8.



Let us know how it goes.



Regards,

Nikhar Khare

Microsoft Community - Moderator