When you try to insert a MathML equation, you might get the font initialization failed error and the MathML equation is not inserted in the document.
Perform the followings steps to resolve this issue:
- Open the fonts folder on your system.
Typically, the fonts are installed under the C:\Windows\Fonts folder.
- Delete the shortcut for MT Extra or Symbol font.
- Reinstall the fonts.
To reinstall the fonts, please contact Adobe customer support by visiting the https://helpx.adobe.com/tech-comm-suite/customer-support.html link.