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Fillable PDF locking after saving

New Here ,
Jan 06, 2022 Jan 06, 2022

Hi,

 

I am having problems with a fillable Adobe Acrobat PDF locking after some users save it.

 

It is a form that is sent out to other users, who fill in the form partially, save it and then email it to me. After receiving the form I need to make further edits, but in some cases the form that I receive is locked and cannot be further edited.

 

The form security is set to not allow signatures or comments. The users are filling the form using Adobe Acrobat Reader DC (64-bit) on their laptops and they are not attempting to sign the form.

 

The issue seems to occur randomly, with the form saving without issue sometimes, and at other times locking for the same user.

 

This issue creates a lot of re-work for me because if the form is locked I need to create an entirely new form.

 

Is there a way to fix this problem?

 

Thanks!

Tiffany

TOPICS
General troubleshooting , PDF forms
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Community Expert ,
Jan 06, 2022 Jan 06, 2022

Is the form eventally processed by a PDF printer or so, when you're getting it back? Reader itself doesn't change the security settings of a PDF form. It requires additional rights for it to do this or for signing forms, so there seems to be something else in the chain responsible. What's shown in the properties of such affected form compared to one that's fine? 

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New Here ,
Jan 06, 2022 Jan 06, 2022

Hi,

 

When we open the locked document we get this error message popping up:

T225362033ysy_0-1641503821359.png

When I open the security properties of the locked documents, they show "filling of form fields" as "Not allowed":

T225362033ysy_1-1641503894182.png

When I open the security properties of a form that can be edited, it shows "Filling of form fields" as "Allowed":

T225362033ysy_2-1641504245405.png

However, I don't know how or why this change is happening when the users are filling out the form and saving it. Is there a way to fix this at the lever of the users or at my level? Thanks for your help!

 

Tiffany

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Community Expert ,
Jan 06, 2022 Jan 06, 2022

Don't add extended features to the form.

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Community Expert ,
Feb 08, 2022 Feb 08, 2022

This happens sometimes when the file got flawly compressed or decompressed when mailed. Think of the extended features added like a certificate added to the form. It tells the Reader, which additional functions can be used and what changes to the file are allowed. It becomes invalid when the form got changed in just one tiny bit any other way. Then you're seeing that error message. If this happens just with certain users, you may try a different way to send and receive the forms with them (cloud, zip file).

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New Here ,
Jan 19, 2024 Jan 19, 2024

What I found was it locks when someone used a fill and sign signature 

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Community Expert ,
Jan 20, 2024 Jan 20, 2024

Yes, signing the file will lock it, unless done with a digital signature field set to not lock the fields when signed.

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New Here ,
Jan 21, 2024 Jan 21, 2024
How do you accomplish that?


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New Here ,
Apr 05, 2024 Apr 05, 2024

I don't know how to prevent the document auto locking, but having had the same issue I managed to get around it by going to the 'prepare form' view and double clicking the field title (to the box where you type in the field name) - there you will see a tick in the 'locked' box bottom left and also sometime sit is also set to 'read only'.  Un checking these ticks makes it editable again.  Bit of a pain if you have lots of fields to edit though. 

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New Here ,
May 30, 2025 May 30, 2025

Not sure if you ever got your answer here, but in the properties of the signature field, you can set the action to "do nothing" when signed. 

 

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New Here ,
May 30, 2025 May 30, 2025

*Edit* In the properties box, go to the "Signed" tab and select "Nothing happens when signed"

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New Here ,
Jul 25, 2025 Jul 25, 2025

I can't find a 'signed' tab in properties

 

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Adobe Employee ,
Jul 25, 2025 Jul 25, 2025

Hi authentic_sincerity5204,

 

Thank you for reaching out.

 

You seem to have selected the Acrobat Sign form, which is why you do not see the Signed tab under the properties window.

Please click on the three dots at the top right corner of the left-hand pane. Select "Remove E-signing options".

Then check if you see the option or not. Check the screenshot below for reference.

 

 

For more information on creating a PDF form, refer to the following help document: Create a form in Acrobat.

 

Feel free to let us know if you have any questions or need help.

 

Thanks,

Meenakshi

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Community Expert ,
Jul 25, 2025 Jul 25, 2025
LATEST

Are you sure you're looking under the field's properties, and not the file's? Post a screenshot of what you're seeing.

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