If using dvips or pdfTeX, you may need to update the CIDFont map file.
Step 4: Fix the PDF via Refrying or Re-Embedding (For Content Creators) cidfont f1 f2 f3 f4 f5 f6 install
If you created the document using software like AutoCAD, InDesign, or Microsoft Word, the export settings are likely the culprit. Open the original source document. Go to the or Save As menu and select PDF. Open the PDF Options or Advanced Settings menu. If using dvips or pdfTeX, you may need
No errors about missing CIDFonts means success. If using dvips or pdfTeX