Install Media Feature Pack

當沒有 Media Feature Pack, 執行某些 program, 比如 sharex 會見到

mfplat.dll was not found

原因

Windows N versions don't include the media pack by default

Windows 10 N:

For Windows 10, version 1909 and later, the Media Feature Pack is only available for download as an Optional Feature.

Settings > Apps > Apps & features > Optional features > Add a feature > search "Media Feature Pack"