Install all supplemental fonts on Windows 10

install_all_fonts.bat

DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Arab~~~und-ARAB~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Beng~~~und-BENG~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Cans~~~und-CANS~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Cher~~~und-CHER~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Deva~~~und-DEVA~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Ethi~~~und-ETHI~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Gujr~~~und-GUJR~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Guru~~~und-GURU~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Hans~~~und-HANS~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Hant~~~und-HANT~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Hebr~~~und-HEBR~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Jpan~~~und-JPAN~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Khmr~~~und-KHMR~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Knda~~~und-KNDA~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Kore~~~und-KORE~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Laoo~~~und-LAOO~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Mlym~~~und-MLYM~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Orya~~~und-ORYA~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.PanEuropeanSupplementalFonts~~~~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Sinh~~~und-SINH~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Syrc~~~und-SYRC~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Taml~~~und-TAML~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Telu~~~und-TELU~0.0.1.0
DISM.exe /Online /Add-Capability /CapabilityName:Language.Fonts.Thai~~~und-THAI~0.0.1.0

This installs ~250MB of extra fonts.

DISM.exe /Online /Add-Capability can sometimes hang during a download, at which point it will remain broken. You can reboot to fix it.

If this list becomes out of date (last generated on 1809), use DISM.exe /Online /Get-Capabilities and filter the list for "Language.Fonts."

For reference

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/dism-capabilities-package-servicing-command-line-options

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/features-on-demand-v2--capabilities