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Unable to install.net 3.5, error code 0x800F081F

Anonymous
2025-05-04T19:18:51+00:00

Follow the online tutorial to set Windows update to open automatically, still useless. After that I tried the dism still appear error code 0x800F081F.

Windows for home | Windows 11 | Install and upgrade

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  1. Anonymous
    2025-05-04T19:34:35+00:00
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  2. Ramesh Srinivasan 173.9K Reputation points Volunteer Moderator
    2025-05-05T02:13:19+00:00

    Please upload your CBS logs to OneDrive or GoFile.io and share the link here. To collect the CBS logs, open admin PowerShell and run:

    GCI -Path 'c:\windows\logs\cbs\*.*',  'c:\windows\logs\dism\dism.log' | Compress-Archive -destination (join-path ([environment]::GetFolderPath('Desktop')) \CBS.zip)

    This creates a file named CBS.zip on your desktop. Share it on OneDrive or GoFile.io and post the link here.

    (or)

    Launch Settings > System > Recovery. Under "Fix problems using Windows Update", select "Reinstall now."

    This does a repair installation, keeping your files, apps, and settings.

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  3. Anonymous
    2025-05-06T15:41:05+00:00

    https://gofile.io/d/ZruLt9

    CBS.zip

    I don't have this error in Windows 10 hyperV virtual machine.

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  5. Ramesh Srinivasan 173.9K Reputation points Volunteer Moderator
    2025-05-06T16:50:45+00:00

    @james kim010

    1. Can you confirm you're using the Windows 11 ISO (instead of the Windows 10 ISO) on the Windows 11 PC to install .NET Framework 3.5?
    2. Run
    • dism /online /cleanup-image /startcomponentcleanup
    • dism /online /cleanup-image /restorehealth
    1. Run:
    • dism /online /enable-feature /featurename:NetFX3 /All

    Once done, share the latest logs from the CBS folder.

    *c:\windows\logs\cbs*

    Also, share:

    c:\windows\logs\dism\dism.log

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