Hi Duqiang He •
The error code 0x800F0950 usually means Windows can’t pull the required language pack files from Microsoft’s servers, often due to WSUS/group policy settings or leftover corrupted install files. The quickest workaround is to install the Simplified Chinese package using DISM or PowerShell directly, bypassing the Settings UI
DISM manually:
DISM /Online /Add-Capability /CapabilityName:Language.Basic~~~zh-CN~0.0.1.0
This forces Windows to fetch the Simplified Chinese typing package directly.
Check WSUS/Group Policy: If your machines are domain-joined, make sure UseWUServer is set to 0 under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU. Then restart the Windows Update service.
Clean up residue files: If previous installs failed, run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth to clear corrupted components.
Some tips:
Always install language packs from Microsoft’s official servers, not older Windows 10 packages.
Test on a clean VM first to confirm the pack installs correctly before rolling out to multiple devices
If this explanation helps you get the language pack installed, please hit “accept answer” so we know the guidance worked for you.