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Editorial Team
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Asked: 2026-06-01T02:19:06+00:00

While I was trying to Update my Project I was making – I got

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While I was trying to Update my Project I was making – I got an error for the first time I’ve seen:

‘An error occurred while signing: SignTool.exe not found.’

I’ve never seen this before, So I looked up that SignTool.exe is what signs my project for ClickOnce Deployment.

I also read that is it a part of Windows SDK – but when I looked to find where SignTool.exe is – I saw it right there!

  C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Bin

I saw no problem, and I’ve always published my Project all the time – I’m on Version 68. But this is the first time I’ve seen this – I didn’t touch any options that would do this.

Any help?

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1 Answer

  1. Editorial Team

    Now try to publish the ClickOnce application. If you still find the same issue, please check if you installed the Microsoft .NET Framework 4.5 Developer Preview on the system. The Microsoft .NET Framework 4.5 Developer Preview is a prerelease version of the .NET Framework, and should not be used in production scenarios. It is an in-place update to the .NET Framework 4. You would need to uninstall this prerelease product from ARP.

    https://blogs.msdn.microsoft.com/vsnetsetup/2013/11/18/an-error-occurred-while-signing-signtool-exe-not-found/

    Lastly you might want to install the customer preview instead of being on the developer preview

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