How do I unlock a Preview-edited document with an unknown password?

I just recently used preview to edit my tax document for my tax preparer. The document was locked with a 5 digit code that I never changed. I edited in preview and saved it. Now my Document won't open with the original password. It seems that preview set a new password on it's own and I can't figure out what it is to reset or disable it. Help!?


[Re-Titled by Moderator]

MacBook Pro 14″, macOS 15.3

Posted on Mar 21, 2025 10:55 AM

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Posted on Mar 22, 2025 5:45 PM

It is a known bug with Preview, especially for fillable forms taking the creator's restrictions & passing it onto the whole PDF file instead of just the non-form areas. You will need to get another copy of that PDF and use a third party PDF editor to make any changes to it. If you let Preview touch it, then it will become locked once more.

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Question marked as Top-ranking reply

Mar 22, 2025 5:45 PM in response to LazySloth247

It is a known bug with Preview, especially for fillable forms taking the creator's restrictions & passing it onto the whole PDF file instead of just the non-form areas. You will need to get another copy of that PDF and use a third party PDF editor to make any changes to it. If you let Preview touch it, then it will become locked once more.

Mar 21, 2025 12:59 PM in response to LazySloth247

LazySloth247 wrote:

I just recently used preview to edit my tax document for my tax preparer.

The document was locked with a 5 digit code that I never changed. I edited in preview and saved it. Now my Document won't open with the original password. It seems that preview set a new password on it's own and I can't figure out what it is to reset or disable it. Help!?

[Re-Titled by Moderator]


processed or edited originally with what application...(?) or this was originally an on-line interface— it is unclear from your post.


Try a different PDF editor/viewer...and compare your results



there are many, a few examples:


Foxit Reader / Editor

https://www.foxit.com/


Wondershare PDFelement

https://pdf.wondershare.com/


Acrobat Reader / Adobe Acrobat DC

https://get.adobe.com/reader/


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How do I unlock a Preview-edited document with an unknown password?

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