PDF Warning Internal Error 00 invalidfont

Question

Macbook Pro 15.7.2 with HP Laserjet Pro MFP 4101dfw and HP Laserjet Pro M428f.

When I try to print some PDFs (not all), it acts like it is going to print but the page that comes out of the printer only says this:

PDF Warning

Subsystem: PARSER

Warning: InternalError 00

Error Information:

Reported by PDL PDF

invalidfont

No errors given in printer logs. As far as the computer/printer is concerned, it printed the documents just fine.

I have spent hours on the phone with HP thinking it was a printer/driver issue, and they've concluded that it is an Adobe Acrobat issue since I can print it from other PDF programs and Preview. It also prints "as image" in Acrobat, but that ruins the formatting as I need it to print actual size on the page. I uninstalled/reinstalled printer and Acrobat multiple times. Does anyone have any suggestions on where I can go from here to resolve this issue?

Also, these documents used to print just fine. This started a couple of months ago.

creative explorer · Answer

@danielr74939812 the title says it...'invalidfont' —there is an issue with one of the fonts. I would double check and update the Mac Printer Sriver. Look for a recent dedicated macOS driver for the MFP 4101dfw and M428f (not a generic PCL driver.) The two main printer protocols are PCL and PostScript (PS). The invalidfont error is usually a PostScript interpretation error. Go to System Settings - Printers & Scanners. Delete your current HP printer entry. Re-add the printer and try to select a different driver or protocol during the setup (e.g., if you are currently using the generic Apple PS driver, try to find a specific HP driver, or vice versa). And make sure the fonts are embedded. Better yet, look at the properties of the PDF and see what fonts are being used too. Maybe, it's a weird font?

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