Any process that activates, maintains or increases the frequency, rate or extent of microglia differentiation, the process in which a relatively unspecialized cell acquires specialized features of a microglial cell.
Synonyms:
exact_synonym:
positive regulation of microglial cell differentiation; up regulation of microglia differentiation; upregulation of microglia differentiation
narrow_synonym:
activation of microglia differentiation; stimulation of microglia differentiation