@Bilal Khan
Hi,
This error code 0x800f081f can occur when an alternative installation source is specified and one of the following conditions is true:
The location that is specified by the path does not contain the files that are required to install the feature.
The user who tries to install the feature does not have at least READ access to the location and to the files.
The set of installation files is corrupted, incomplete, or invalid for the version of Windows that you are running.
Use the “Source” option to specify the location of the files that are required to restore the feature. For more information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077.
To fix the error, you will need Windows Installer .ISO:
Once you have mounted your Windows Installer .ISO, open up an elevated Command Prompt and depending upon whether you have install.esd or install.wim in the \Sources folder of your Windows setup disk, run one of the following commands:
Dism /Online /Cleanup-Image /RestoreHealth /Source:wim:E:\Sources\Install.wim:1 /limitaccess
Or another command is:
Dism /Online /Cleanup-Image /RestoreHealth /Source:esd:E:\Sources\Install.esd:1 /limitaccess
Hope above information can help you.
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