platform exec: Cannot install appx package exit status 0xffffffff Add-AppxPackage : Deployment failed with HRESULT: 0x800B0109, A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider. error 0x800B0109: The root certificate of the signature in the app package or bundle must be trusted. NOTE: For additional information, look for [ActivityId] 459e751f-e4db-0001-96d0-9e45dbe4da01 in the Event Log or use the command line Get-AppPackageLog -ActivityID 459e751f-e4db-0001-96d0-9e45dbe4da01 At line:1 char:85 + ... CentersUWP_1.0.8.0_x64_Debug.appx";Add-AppxPackage $appx_file;if( -no ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (C:\Users\Admin\..._x64_Debug.appx:String) [Add-AppxPackage], Exception + FullyQualifiedErrorId : DeploymentError,Microsoft.Windows.Appx.PackageManager.Commands.AddAppxPackageCommand