Limit outstanding packets: registry value MaxOutstandingSendsComputerHKLM\Software\Policies\Microsoft\Windows\Psched

Policy ID: QosMaxOutstandingSends
Scope: Computer Configuration
Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Network › QoS Packet Scheduler

Registry

MaxOutstandingSends

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\Psched Current key

Enabled value: Depends on the option value
Element: Number of packets:
Value type: REG_DWORD
Client extension: {426031c0-0b47-4852-b0ca-ac3d37bfcb39}
Required: true
Maximum value: 4000000000

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Psched]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"MaxOutstandingSends"=dword:<enter value>

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\Software\Policies\Microsoft\Windows\Psched" /v "MaxOutstandingSends" /t REG_DWORD /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\Psched' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Psched' -Name 'MaxOutstandingSends' -PropertyType DWord -Value '<enter value>' -Force | Out-Null