This warning appears when you open a file that uses fonts not currently installed on your computer.
(Generated for illustrative purposes) Publication Date: April 2026 Keywords: Font substitution, fallback font, text rendering, Unicode, missing glyph, typography, digital publishing Font substitution will occur continue
In applications like Microsoft Word or Adobe InDesign, when a document with missing fonts is opened, a dialog box appears. The user is given a choice to "Cancel" (do not open the file) or "Continue" (open the file while accepting that font substitution will occur). This warning appears when you open a file
Thus, substitution is not a temporary workaround but a permanent layer in text rendering pipelines. Font substitution will occur continue