Enable remote mailslots

Supported on: At least Windows Server 2025, Windows 11

Registry

HKLM Software\Policies\Microsoft\Windows\NetworkProvider

Value name: EnableMailslots

Enabled: EnableMailslots = 1

Disabled: EnableMailslots = 0

Description

This policy controls whether the SMB client will enable or disable remote mailslots over MUP. If you disable this policy setting, remote mailslots will not function over MUP, hence they will not go through the SMB client redirector. If you do not configure this policy setting, remote mailslots may be allowed through MUP.