If you're trying to open a PDF in and getting this error, don't open the file directly. Instead: Create a new, blank document. Use the Place command to bring the PDF in.
When a program creates a PDF, it often tries to "embed" fonts so they look the same on every computer. If the software fails to embed the font correctly, it gives that font a generic alias like , F2 , or F3 . cidfont f1normal font free download link
If you still receive the error after trying these methods, the PDF likely contains corrupt font pointers. In that case, re-export the original document from its source application (e.g., Word, InDesign, or AutoCAD) with . If you're trying to open a PDF in