Forum Discussion
MSIX package signing issue with certificate installed in a certificate store
Thanks TIMOTHY_MANGAN appreciate your input
Subject Name matched with Manifest file CN name verified it. Just to reassure I exported the certificate installed by our team in the store as a .cer file and imported it during the MSIX pacakging process. Which do not sign the package but automatically generates the correct publisher information.
Also I tried using the Digicert Utility tool to sign the package(GUI method) and getting below error. Is this a generic error message or specific to my scenario not sure.
One thing I noticed is it does not have .MSIX file in the drop down selection of file type we are signing shown in below. Does this mean our code signing certificate is not supporting MSIX file type? after all the error message we got while using the signtool was "The file format cannot be signed because it is not recognized"
If the Digicert utility doesn't recognise .msix, you can try renaming the file to .appx and then sign it. Ultimately I assume this utility is calling the Microsoft signtool.exe utility to perform the signing.
There is no difference on the file extension; the difference between a UWP app and a MSIX one is internal to the manifest file rather than the file name extension.
You might also just leave the timestamp off for a test and make sure that it is not the cause.
