If the error message This app package is not supported for installation by app installer is troubling you, then this post may help you. The App Installer is a Windows ...

When trying to install a package in Visual Studio Installer, we get an error stating that the operation has failed. Since it hinders our workflow, we need to find a ...

Maybe you could use a known-good gpg on a a different system, to verify the gpg installer for MacOS (e.g if you have access to a Linux system where GPG is pre-installed; maybe install Linux in a ...