Since you cannot download "F1Normal," you can resolve viewing issues by substituting it with the standard fonts it originally represented. Common mappings include: Arial (Bold or Regular) : Often mapped to F1 or F2. Times New Roman : Frequently used as a fallback. Tahoma or Myriad Pro : Other common substitutions that match the visual style. : Suggested as a modern alternative for CID font issues. How to Fix CIDFont Errors