
Because Windows 10 updates frequently change file requirements, Microsoft does not provide a single, universal "offline installer" EXE for language packs. Instead, they are distributed as Local Experience Packs (LXPs) via the Microsoft Store or as FOD (Features on Demand) CAB files.
He typed:
dism /online /add-package /packagepath:D:\lp.cab windows 10 english language pack offline installer
Why? You are not a true administrator, or your system files are corrupt. Fix: Run DISM to repair health before installing the pack (offline mode works too): You are not a true administrator, or your
For IT professionals: You can create a custom Windows 10 installation USB that has English already integrated. This is called slipstreaming. Reboot
Reboot.
Warning: Do not download language packs from random “free download” websites. Many contain malware, adware, or modified DLLs. Stick to official or trusted sources.