SignTool error: SignerSign() failed." (-2147024885/0x8007000b) when signing msi file


We recently purchased an EV Code Signing Certificate. I followed instructions and I can successfully sign our built applications (exe files), our libraries (dll). However, I can't sign our setup packages (MSI files), I always get this error:

SignTool Error: An unexpected internal error has occurred. Error information: "Error: SignerSign() failed." (-2147024885/0x8007000b)

I don't see anything in Event Viewer. I am really stuck here, I don't not understand how same command could work for certain file types and not for msi files.

Thanks in advance for your help!

asked on Stack Overflow Apr 6, 2018 by codefire • edited Apr 6, 2018 by Fenrir

1 Answer


The following cause was reported on a forum post:

Have just found the cause: my antivirus Trend Micro Worry Free Advanced is the problem.

When I deactivate it, I can sign without any problem and it is much faster to sign.

Now I have to find to which part I have to set an exception in the antivirus.

The strange thing is that I never had any problem to sign with my Authenticode certifcate,

but here with an EV Code Signing certificate my antivirus blocks something...

Posted by david[SDT] Monday, April 9, 2018 12:47 PM

answered on Stack Overflow May 2, 2019 by StayOnTarget

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