Enable Keyman Uniscribe Manager
Keyman Desktop will detect if your computer can display text in your language correctly, using the Windows component called "Uniscribe". If Keyman determines that Uniscribe cannot display your language correctly, it will use the Keyman Uniscribe Manager so that your language will display correctly.
Uniscribe controls the display of complex script fonts on your computer, for scripts such as Devanagari, Tamil, Khmer, Tibetan or Mongolian. Microsoft periodically release new versions of Uniscribe but these are not typically made available on older operating systems. The Keyman Uniscribe Manager resolves this limitation.
After enabling or disabling the Keyman Uniscribe Manager, you will need to restart applications where you wish to use your language in order for the Keyman Uniscribe Manager to be available.