Allow installation default

You can specify the default behavior of all channels to allow or block Microsoft Edge on domain-joined devices. You can override this policy for individual channels by enabling (1) the 'Allow installation' policy for specific channels. If you disable (2) this policy, the installation of Microsoft Edge is blocked. This only affects the installation of Microsoft Edge software when the 'Allow installation' policy is set to Not Configured. This policy doesn't prevent Microsoft Edge Update from running or prevent users from installing Microsoft Edge software using other methods. This policy is available only on Windows instances that are joined to a Microsoft® Active Directory® domain.