Edit

UWF_Servicing

  • Article

This class contains properties and methods that enable you to query and control Unified Write Filter (UWF) servicing mode.

Syntax

class UWF_Servicing {
    [key, read] boolean CurrentSession;
    [read] boolean ServicingEnabled;

    UInt32 Enable();
    UInt32 Disable();
    UInt32 UpdateWindows(
        [out] UInt32 UpdateStatus
    );
};

Members

The following tables list the methods and properties that belong to this class.

Methods

Method Description                                                                     
UWF_Servicing.Disable Disables Unified Write Filter (UWF) servicing mode.
The system leaves servicing mode in the next session that follows a restart.
UWF_Servicing.Enable Enables Unified Write Filter (UWF) servicing mode.
The system enters servicing mode in the next session that follows a restart.
UWF_Servicing.UpdateWindows Calls Windows Update to download and install critical and security updates for your device running Windows 10 Enterprise.

Properties

Property Data type Qualifiers Description                                                                     &
CurrentSession Boolean [key, read] Indicates when to enable servicing.
- True if servicing is enabled in the current session
- False if servicing will be enabled in the session that follows a restart.
ServiceEnabled Boolean [read] Indicates if the system is in servicing mode in the current session, or will be in servicing mode in the next session that follows a restart.
- True if servicing is enabled
- otherwise, False.

Remarks

This class only has two instances, one for the current session, and another for the next session that follows a restart.

Example

The following example shows how to enable and disable UWF servicing mode on a device by using the Windows Management Instrumentation (WMI) provider in a PowerShell script.

$COMPUTER = "localhost"
$NAMESPACE = "root\standardcimv2\embedded"

# Define common parameters

$CommonParams = @{"namespace"=$NAMESPACE; "computer"=$COMPUTER}

# Enable UWF servicing

$nextSession = Get-WmiObject -class UWF_Servicing @CommonParams | where {
    $_.CurrentSession -eq $false
}

if ($nextSession) {

    $nextSession.Enable() | Out-Null;
    Write-Host "This device is enabled for servicing mode after the next restart."
}

# Disable UWF servicing

$nextSession = Get-WmiObject -class UWF_Servicing @CommonParams | where {
    $_.CurrentSession -eq $false
}

if ($nextSession) {

    $nextSession.Disable() | Out-Null;
    Write-Host "Servicing mode is now disabled for this device."
}

Requirements

Windows Edition Supported
Windows Home No
Windows Pro No
Windows Enterprise Yes
Windows Education Yes
Windows IoT Enterprise Yea