Use Windows Certificate Store

Automatically search for and import CAs that have been added to the Windows certificate store by a user or administrator.

Requires Firefox 49 or above.

Supported on: At least Windows Vista
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Mozilla\Firefox
Value NameUseCertSystemStore
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

mozilla.admx