Hi @gellis,
Welcome to the HP Support Forums!
I see that you're unable to print a password protected PDF document. I will certainly do my best to assist you.
When you tried to print the protected PDF it has encryption on it, the printer's printing language (PostScipt) cannot convert the encrypted file. You will need to remove the encryption and it should be able to print normally.
Therefore, you would need to remove the restrictions and password of the PDF (assuming you have correct credentials to do so), prior to printing.
See this guide for more information:
If the issue persists, I recommend that you contact Adobe Support.
Adobe Systems/Customer service
Call: 1 (800) 833-6687
I hope this information is helpful. Please respond to this post with the results. Good Luck!
Drakster
I work on behalf of HP
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