[Solved] Untrusted Certificate when installing MSIX build using Flutter

On the last day when I tried to install my flutter app build for windows using the MSIX plugin, I faced an error saying that the app certificate is untrusted. So with some research online I find a solution to that problem. So if you are facing the same issue follow the below steps.

  • Select Properties from the right-click menu of the MSIX package.
  • Go to the Digital Signature tab.
  • From the Signature List choose the certificate.
  • Click on Details.
  • Click on View Certificate.
  • Click Install Certificate.
  • Choose Local Machine from Store Location.
  • Allow the app to install certificates.
  • Choose Place all certificates in the following store.
  • Click Browse and select Trusted People.
  • Click OK and Click Next then Click Finish
  • Then you should see a popup window with the message “Import was successful”

Watch the below video if you have any doubts.

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