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FileUnsigner – Remove digital certificates from files

This small tool was created to simplify the process that was discussed at Remove digital signature from a file using C# and simply aid the people that didn’t have the knowledge on how to compile the code posted there.

This is a small standalone tool that will simply remove the digital signature of any file.

The usage is fairly simple. Either drag and drop the files you want to unsign on the application or use command prompt with the following parameters:

FileUnsigner.exe <options> <file1> <file2> …

Current Options:
/f            Forces the program to remove a digital signiture even if one is not detected.

You will find a download link for FileUnsigner below.

Download

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21 Responses to FileUnsigner – Remove digital certificates from files

  1. IW39 says:

    It keeps exiting out of the FileUnsigner when I drag the file onto it.

    • IW39 says:

      Can someone please help me with this?

      • CooLMinE says:

        Hello IW39,

        FileUnsigner shouldn’t just exist without any message. Something else is going on here.

        What happens if you run FileUnsigner from command prompt (cmd.exe) with the relevant arguments? Does it display more information?

        Example: C:\FileUnsigner.exe “C:\SignedFile.exe”

  2. DarkmanXT says:

    Worked perfectly! Had been trying to install new driver file for wifi card for 2 weeks until I found this. Awesomely simple. :)

  3. Camelonian says:

    Doesn’t seem to work any more. Tried using it on HP Recovery Manager and it reports that it doesn’t appear to be digitally signed.

  4. Rascal35 says:

    Thanks! It worked fine.

  5. Nathan Graham says:

    Brilliantly simple. It just works. Download Now!

  6. Pitters says:

    Thanks, CoolMinE, worked – enabled me to re-install SQLBakUPftp . . .

    now wretched Windows 10 has blocked it again “for my security” :(

    Any ideas what I could try next?

    • CooLMinE says:

      Hard to say without being able to replicate the problem sadly. I have the SmartScreen featured disabled so I never get these “warnings”.

      My guess would be that, even if you unsigned the installer, therefore allowing you to install SQLBakUPftp, the files that were installed are probably signed as well. You can start by verifying if this is the case and trying to remove the certificates for those files as well.

  7. Larry says:

    Fantastic Util. Saved my bacon

  8. Swami says:

    I want to remove digital signature from .pdf file. Will fluxbyte be useful?

  9. avinsah says:

    Trojan Virus high level

  10. user says:

    Thank you for the tool. It enabled old drivers to be installed on Win 10

  11. Selim Atmaca says:

    Great! it works

  12. Brenden says:

    I was wondering, how am I able to use this on a windows system file, without getting an access denied message?

    Thanks,

    Brenden.

    • CooLMinE says:

      Access denied probably means that you are not running the program as administrator. Lunch command prompt as an admin then call the program with the needed parameters as usual.

  13. Mark M says:

    Works flawlessly, thank you for the tool

  14. chrisuem says:

    love the drag and drop functionality extremely easy to use

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