Add-WindowsPackage -PackagePath "C:\Temp\lp.cab" -Online
Error 0x800f081f: This usually means the path to the .cab file is incorrect or the file itself is corrupted. Verify the file source. windows language pack offline install
Open the Start menu, search for Command Prompt, right-click it, and select Run as Administrator. Use the following command syntax to add the package: Add-WindowsPackage -PackagePath "C:\Temp\lp
Replace the path in quotes with the actual location of your file. search for Command Prompt