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)“

Issue certificates with shortened validity period

Sometimes it is necessary to issue certificates with a shorter validity period than configured in the certificate template. Therefore, you may not want to reconfigure the certificate template right away or create another certificate template.

Continue reading „Zertifikate mit verkürzter Gültigkeitsdauer ausstellen“