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[MSIX] Signing

Sign the MSIX/APPX package with a certificate for the testing purposes or distribution. Signing an app package provides the user with verification that the app’s data have not been modified after it was signed while also confirming the identity of the user or company that signed it.

Important

Precondition: Open the MSIX package in MSIX Editor (see Open MSIX/APPX).

  1. Go to the Package Designer > Digital signature tab.

    msix-editor-signature

  2. Select the necessary signing settings. They will be applied during the package saving.

    Attention

    To sideload the MSIX/APXP package, perform the following:

    (1) Enable the Developer Mode or Sideloading apps on the target system;

    (2) Ensure that the certificate, used for signing, is trusted on that system. If you are using the self-signed certificate, install it manually to the Trusted People or Trusted Publishers local machine certificate store. By adding a certificate to local machine certificate stores, you affect the certificate trust of all users on the computer. It is recommended that you remove those certificates when they are no longer necessary to prevent them from being used to compromise system trust.



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