Hope you are doing well and sorry for the trouble. As described you are unable to print the PDF file and getting the error 'Printing the protected file is currently unsupported'
Is this a issue with a particular PDF file or with all the PDFs? Please try with a different PDF file and check .
Also, please check the document restriction summary and see if printing is allowed or not? Open the PDF in Acrobat Reader DC (Freeware application) Go to File > Properties > Under Security Tab , check the document restriction summary.
If the PDF is protected by the password for printing please get in touch with the author/creator of the PDF file to remove the password and share the document with you for printing.
Good morning I just started having same issue with any docs on my Ipad Air 2. I did just upgrade to IOS 14.4.2 but following this link I see it asked to try other docs. I have been able to print for years but all of the sudden it does not matter what I open and try to print I get the following pop up on bottom of the doc.
"printing protected file is currently unsupported"
Any help would be appreciated as I can't figure out how to change any settings in the app.