[VS2015] “An error occurred while signing: SignTool.exe not found”

Today I crossed this error when building a solution from Visual Studio 2015. The signtool.exe is a tool which is used to sign applications (or dlls) so it can be traced back to a specific certificate. When you don’t use it, you don’t need to know but the error can be annoying.

There is a simple solution though; edit your Visual Studio settings and make sure the ClickOnce components are selected, see below:


With these installed, signtool.exe should be a part of your deployment and you’re now good to go. Enjoy!

7 thoughts to “[VS2015] “An error occurred while signing: SignTool.exe not found””

    1. Web installer or ISO installer you should still be able to get to it by going to Control Panel -> Programs and Features -> Microsoft Visual Studio 2015 Click Change then the installer will load and you can click Modify to add the feature.

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