https://learn.microsoft.com/en-us/uwp/api/windows.applicationmodel.socialinfo.provider.socialdashboarditemupdater.ownerremoteid?view=winrt-26100
SocialDashboardItemUpdater.OwnerRemoteId Property (Windows.ApplicationModel.SocialInfo.Provider) -...
Gets the ID that identifies the user on the provider's system.
propertywindowsprovider