MSIX -> Local Activation permission for COM server - com

Question

My package is installed in sideloaded way and keeps encountering the app-specific permission error.
Yes many suggest to alter permissions and owners manully in regedit and Component Services.
My app is actually missing in the DCOM Config under the Component Services (DCOMCNFG, DCOMCNFG -32).
I see neither errors in the proc monitor nor warnings. How can I grant permissions in this case and why isn't this specific task accomplished by the MSIX installer ?
The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID
{2593F8B9-4EAF-457C-B68A-50F6B8EA6B54}
and APPID
{15C20B67-12E7-4BB6-92BB-7AFF07997402}
to the user PRECISION\Tommy SID (S-1-5-21-3771326467-2290839719-591499861-1001) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool.
I attmepted to grant DCOM permission by using this PS modul but to no avail:
Grant, Revoke, Get DCOM permissions using PowerShell
Import-Module .\DCOMPermissions
Grant-DCOMPermission -ApplicationID "{9CA88EE3-ACB7-47C8-AFC4-AB702511C276}" -Account "SYSTEM" -Type Launch -Permissions LocalLaunch,LocalActivation -OverrideConfigurationPermissions
Keep witnessing the error in the Event Viewer and this prohibits my app to start up:
Event Viewer exhibiting the error ID 10010
I build the MSIX package with the help of this AppxManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<Package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10">
<Identity Name="WeatherHistory" Version="0.7.0.2" Publisher="CN=Contoso Software, O=Contoso Corporation, C=US" />
<Properties>
<DisplayName>Weather History</DisplayName>
<PublisherDisplayName>Cosmic ray</PublisherDisplayName>
<Logo>Images/satelite.png</Logo>
</Properties>
<Dependencies>
<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.17763.0" MaxVersionTested="10.0.18363.0" />
<TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.17763.0" MaxVersionTested="10.0.18363.0" />
</Dependencies>
<Resources>
<Resource Language="en-us" />
</Resources>
<Applications>
<Application Id="Weather.History" Executable="Weather.History.Splash.exe" EntryPoint="Weather.History.Splash">
<VisualElements DisplayName="Weather History" Description="Frontend" Square150x150Logo="Images/satelite.png" Square44x44Logo="Images/satelite.png" BackgroundColor="yellow" xmlns="http://schemas.microsoft.com/appx/manifest/uap/windows10" />
<Extensions>
<Extension Category="windows.fullTrustProcess" Executable="Weather.History.Stylet.exe" xmlns="http://schemas.microsoft.com/appx/manifest/desktop/windows10" />
</Extensions>
</Application>
</Applications>
<Capabilities>
<Capability Name="runFullTrust" xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities" />
<Capability Name="internetClient" />
</Capabilities>
</Package>
... and addded code to my package entry point exe as
private async void LaunchProduct()
{
try
{
if (ApiInformation.IsApiContractPresent("Windows.ApplicationModel.FullTrustAppContract", 1, 0))
{
await FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync();
}
else
{
Exit($"Your Windows version is not supported.");
}
}
catch (Exception e)
{
Exit("Failed to launch Weather History", e);
}
}
There is a WPF splash attempts to launch another WPF both are based on the common TFM .NET 4.7. The first WPF ought to launch the second as a trusted process harnessing this MSIX package extension infrastructure. Pro boostrapper mechanism. If my take on is right.
This ain't a pacage bundle, so what architecture is my package actually targeting ? I always compile Any CPU.
I finally build the package by invoking the respective tool as :
makeappx.exe pack /v /o /f mapping.map /m Appxmanifest.xml /p ./Weather.History.msix

Answer 1

The EntryPoint indeed must be designated as trusted.
EntryPoint="Windows.FullTrustApplication"