I have no option to clear signature

I need to clear a signature from a form. I was the last one to sign it. When I right click the signature block, the only options I get are Validate Signature, View Signed Version, Compare Signed Version to Current Version, and Show Signature Properties. Immediately after I sign the block and save, I have the option to clear the signature. But if I close the document and reopen it, the clear signature option disappears. Does anyone know why this happens and how I can get the option back? Thanks for any help!

Something to look at:
Open the Signature panel (View > Navigation Panels > Signatures)
In AA8, use the Options drop-down - see if there is anything there that might help.
In AA9 the drop-down is with the cog-wheels icon.
Be well...

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Once a PDF is digitally signed, how to I disable the "Clear signature" option? I cannot allow appli

I need to set up digital signatures for a number of documents, but once signed, the signatures must be permenant. Currently the owner has the option (right clicking on the signature), to "clear signature" - how do I disable this?
Thanks in advance!

The point is that this is trivial to achieve for anyone, even if the file is locked after signing.
They just need to keep a copy of the unsigned file, delete the signed one, and replace it with the unsigned file. So such protection means nothing.
Repudiating signatures is a very bad thing, but it can only have real meaning if someone or some process knew about the signing. Otherwise, it's like someone signing a piece of paper, and destroying their signed copy without showing it to anyone; it's as if it never happened, and nothing was gained. If on the other hand a person has received the signed file, or a process has securely archived it, then removing a signature has no repudiating effect on the copy.
It can be hard to convert paper-based to electronic-based workflows where files can be freely duplicated, shared etc.
Clearly, though, if a person can sign a file, then others can act on that signature, and then the signer can still edit the original signed file, there is a big problem, not just of repudiation but of auditability.

I recently bought a new macbook and installed Acrobate Pro. My settings/preferences did not come over and I do not have the same style options for my signature. It now only allows me three options and the style I have been using for the last year is not

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Hi Amanda ,
Which version of Acrobat are you using?
Which signature style are you talking about?
You can go ahead and try uninstalling and reinstalling it and see if that works for you .
Use the cleaner tool to uninstall it .Here is the link.
Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs
You can refer to the following link to re install it .
https://helpx.adobe.com/acrobat/kb/acrobat-downloads.html
Regards
Sukrit Dhingra

Adobe Acrobat Version 9.0 & X are not showing "Clear Signature Field" with Custom e-sign plug-in

Hi...
We have created Custom PDF signature plug-in using Adobe X SDK.
Earlier we had the same Custom PDF signature plug-in with Adobe 7.0 SDK and it used to show "Clear Signature Field" in context menu of digital signature placed on PDF.
After upgrading the Custom signature plug-in to Adobe X SDK (complied again with SDK X, earlier it used to be 5.0 SDK) to support Acrobat 9, X and XI for digital signature, the "Clear Signature Field" option is appearing in context menu of digital signature box. Even the "Clear Signature Field" option is not shown for the user who has signed the document.
"Clear Signature" option is available for Adobe Default Security signature.
We have not changed anything in our plug-in code apart from recompiling it with Adobe X SDK.
This is a critical issue for us.
Here is the screen-shot from signed PDF having Adobe Default signature as well as our Custom plug-in signature.
Here it clearly shows that "Clear Signature" option is not present in signature placed by Custom plug-in.
Please let us know if anyone else has faced this type of issue earlier and has a resolution.
Thanks In Advance...
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I am still not getting the Clear signature option for the user who has signed the PDF using Custom PDF Signature plug-in but the same is available for Acrobat Default security signature.
Custom plug-in is compliled with Adobe X SDK and we have not made any code change to hide the Clear Signature option.
I found a related posts where Clear Signature option is not shown:
http://forums.adobe.com/message/5092195

Can't clear signature box (Acrobat X Pro)

Hi,
I have read some into this and have tried some different fixes with no luck. I had to re-image a person's PC who uses PKI certs. on a CAC to sign PDFs. Acrobat X Pro was re-installed and updated. The digital ID on the CAC is the same before the re-image and it validates. I went to ECA.ORC.com to update the HW4/5/signing certs. and had them jacked into Outlook (just in case it calls on that for some reason). The edit function under tools is grayed out and there is no "security" on the PDF. The customer claims he could right click the signature box and the option to clear would be there; it is not there now. What am I missing here? Thanks.

Below is what my customer saw but its for v.11 and he has 10 Pro. The Key mentioned is not even there in 10.
Digital Signatures
Data type
boolean: DWORD value > REG_DWORD
Default
null
Version #
11.0+
HKLM Path
HKLM\SOFTWARE\Policies\Adobe\(product name)\(version)\FeatureLockdown\cSecurity\cDigSig
Summary
Specifies whether to disable and lock the ability for a signer to clear their own signature.
Details
Possible values include:
0: Disable signature clearing.
1: Enable signature clearing.
GUI mapping
The Clear Signature menu item which appears when a user right clicks on a signature.

How to clear signature in acrobat pro dc

I want to clear a signature on a DC document form that I created. I used to be able to do so by right-clicking the signature field and choose "Clear Signature" but that option is not available.

Hello Pete,
The "Clear Signature" option is available in Acrobat Pro DC as it was in Acrobat XI Pro.
You can clear a signature if you are the signer, that is, if the digital ID with which you did the signing is available to Acrobat.
I can think of two reasons that "Clear signature" might not be available:
1. Your digital ID is not available to Acrobat Pro DC. That is, you have not yet imported it for use in Acrobat or don't have your smart card in the reader, etc.
2. When you signed the PDF, you chose the option to "Lock Document After Signing".
Regards,
Charlene

Save not working on 'Clear signature' in Acrobat 9!

We have a custom Digital Signature plugin in which 'DSDoSave' and 'DSDoSaveAs' callbacks are implemented.
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Any ideas/suggestions on how to get the PDF saved with the cleared signature on 'Save click'?

Thanks Irosenth for ur reply, but I still have a question.
When i open any PDF from local disk, clear the sign and save it, it works!!
However, the same operation is not working in our system scenario...(i.e when we open a PDF from our server).
Could you let me know how to save the cleared sig state in the AVDoc or PDDoc object? Because as I last updated, AVDoc object
is passed to DSDoSave on Save click.
I appreciate any inputs on this.

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thxs!
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Message was edited by: Barry Hemphill

Able to clear signatures in a certified document in Acrobat 9.0

Hi
While testing Acrobat 9.0 feasibility for migrating my application from Acrobat 7.0, I stumbled upon a security issue that the signatures can be cleared in a certified document (Only Form Fill in and digital signatures are allowed) by right clicking and selecting Clear
Signature. After clearing the signature, the document status still remains valid i.e. it doesn't gets invalid even if the signature is cleared. Below are the steps to reproduce the same.
1. Certify a document having couple of signature fields by selecting Certify with Visible Signature and
i "Form fill-in and digital signatures"
as the Permitted Actions after Certifying.
2. Close and re-open the document.
3. Sign a signature field.
4. Close and re-open the document. Right click on the signed signature field and select Clear Signature.
5. Save the document, close and re-open the same. The signature is cleared
and the document status is valid.
This behavior is different from Acrobat 7.0 where
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B) Even if he somehows clears the signature, the document certification becomes invalid.
Also, if you right click on the certifying signature in Step 4 above, it also can get cleared.
This behavior of clearing the signatures in a certified document nullifies the purpose of a certified document to prevent users from changing a document. Also, the option of locking the signature during the certification process is missing in Acrobat 9.
Please let me know whether this is a bug or expected behavior.

Below is the example of difference in behavior of Acrobat 7 and 9.
In case of Acrobat 7, there was no option to clear a signature field in a "certified" document i.e. if I sign and right click on a signature field inside a certified document Acrobat 7.0, the Clear Signature option is not present.
However, if I sign the same signature field in the same PDF in Acrobat 9 and right click, Clear Signature option is available and am able to Clear the signature.

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Clear Signature

Got a question about the "Clear Signature":
suppose I have a stand-alone (a pdf file, not in the WorkSpace) PDF form with 2 Signature fields,
each Signature locks a few fields on the form,
user A signs his Signature, gives the PDF file to user B, and user B signs it also, then returns the file back to A.
now, A right-clicks on the Signature and selects the "Clear Signature", and all his fields are unlocked,
then A makes some changes to his fields, and signs it again.
so, now the form has some new data, with an old Signature signed by B.
that's a problem, because B might not agree with the new data.
How to prevent this from happening?
i.e. is there a way to prevent A from altering the form after B has signed it?
thanks

I tested the following, it may address your situation.
I added the User A signature field to the User B field collection. This means that when the second user signs, it locks the first signers signature field. This DOES NOT prevent the first signer (User A) from clearing his\her signature, but it does prevent User A form being able to re-sign the signature field.
I have attached a very simple sample.
Hope this helps.
Regards
Steve

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I have no option to clear signature

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