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PDF protected by password, but I didn't create one!

I have PDF's that I've opened and edited before, but now some (not all) are password protected so I can't delete or add pages, etc. I am using MacOS 11.6.2, Preview application. I have never put a password on any of them.

MacBook Pro

Posted on Jan 23, 2022 9:09 PM

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Question marked as Top-ranking reply

Posted on Jan 24, 2022 7:07 AM

+1 :-)

3 replies

Jan 24, 2022 7:00 AM in response to fixmycomputer333

There can be two types of passwords set on PDFs. An overall document opening password, and a password set to prevent document changes that presents a password challenge when you attempt to change PDF content.


Preview does not automatically set either password on a PDF, and you deny doing so. That leaves someone that you shared the PDF with as the originator of the password.

PDF protected by password, but I didn't create one!

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