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”