Code signatures of Appx packages via SignTool.exe fail with error code 0x8007000b (ERROR_BAD_FORMAT)

Assume the following scenario:

  • An Appx package is to be signed.
  • For this purpose the SignTool.exe used.
  • The code signing certificate used was recently renewed.
  • The signing process with the new code signing certificate fails with the following error message:
"Error: SignerSign() failed." (-2147024885/0x8007000b) 
Continue reading „Codesignaturen von Appx Paketen per SignTool.exe schlagen fehl mit Fehlercode 0x8007000b (ERROR_BAD_FORMAT)“

SignTool installation without Windows Software Development Kit (SDK) installation

One way to perform code signatures is to use the SignTool command line tool. This is part of the Windows 10 Software Development Kit (SDK).

If you want to use the tool on a system without having to install Visual Studio or the Windows SDK, you can proceed as follows.

Continue reading „SignTool Installation ohne Installation des Windows Software Development Kit (SDK)“