Because it is not a standalone font file, you cannot download a legitimate "MS Shell Dlg 2.ttf" file from a font website. If you are seeing a "missing font" error for MS Shell Dlg 2 in a program like Microsoft Word or Affinity Designer, it usually means the system's font mapping is broken or the program is looking for a physical file that doesn't exist. Tahoma is included by default on all Windows systems.
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— clean, sans-serif, highly legible for dialog boxes and interfaces — here's what I recommend: Ms Shell Dlg 2 Font Free Download UPD