We treat this as an error to be fixed. We reinstall the driver; we re-embed the font. We rush to cover the nakedness of the data.
If you are dealing with a broken PDF, try these proven solutions depending on whether you are viewing the file or creating it. Solution 1: Change Your PDF Viewer (Quickest Fix) cid font f1 f2 f3 f4
: In many cases, these names act as masks for common fonts. For example, in many technical documents, F1 often maps to Arial and F2 to Arial Bold . Why You Might See "CIDFont F1 F2 F3 F4" Errors We treat this as an error to be fixed