Edit C:\Windows\System32\ServerManagerInternal\RDManagement\Disable-RDSHUserDataVHD.xaml

<Activity mc:Ignorable="sads sap" x:Class="Microsoft.RemoteDesktopServices.Workflow.DisableUserDataVhd"
 xmlns="http://schemas.microsoft.com/netfx/2009/xaml/activities"
 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 xmlns:mpa="clr-namespace:Microsoft.PowerShell.Activities;assembly=Microsoft.PowerShell.Activities"
 xmlns:mpma="clr-namespace:Microsoft.PowerShell.Management.Activities;assembly=Microsoft.PowerShell.Management.Activities"
 xmlns:mpua="clr-namespace:Microsoft.PowerShell.Utility.Activities;assembly=Microsoft.PowerShell.Utility.Activities"
 xmlns:mrma="clr-namespace:Microsoft.RemoteDesktopServices.Management.Activities;assembly=Microsoft.RemoteDesktopServices.Management.Activities"
 xmlns:mv="clr-namespace:Microsoft.VisualBasic;assembly=System"
 xmlns:mva="clr-namespace:Microsoft.VisualBasic.Activities;assembly=System.Activities"
 xmlns:s="clr-namespace:System;assembly=mscorlib"
 xmlns:s1="clr-namespace:System;assembly=System.Core"
 xmlns:s2="clr-namespace:System;assembly=System"
 xmlns:s3="clr-namespace:System;assembly=System.ServiceModel"
 xmlns:sa="clr-namespace:System.Activities;assembly=System.Activities"
 xmlns:sad="clr-namespace:System.Activities.Debugger;assembly=System.Activities"
 xmlns:sads="http://schemas.microsoft.com/netfx/2010/xaml/activities/debugger"
 xmlns:sap="http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation"
 xmlns:sc="clr-namespace:System.Collections;assembly=mscorlib"
 xmlns:scg="clr-namespace:System.Collections.Generic;assembly=mscorlib"
 xmlns:sm="clr-namespace:System.Management;assembly=System.Management"
 xmlns:sma="clr-namespace:System.Management.Automation;assembly=System.Management.Automation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <x:Members>
    <x:Property Name="CollectionAlias" Type="InArgument(x:String)">
      <x:Property.Attributes>
        <RequiredArgumentAttribute />
      </x:Property.Attributes>
    </x:Property>
    <x:Property Name="RDMSServer" Type="InArgument(x:String)">
      <x:Property.Attributes>
        <RequiredArgumentAttribute />
      </x:Property.Attributes>
    </x:Property>
  </x:Members>
  <sap:VirtualizedContainerService.HintSize>863,2753</sap:VirtualizedContainerService.HintSize>
  <mva:VisualBasic.Settings>Assembly references and imported namespaces for internal implementation</mva:VisualBasic.Settings>
  <Sequence DisplayName="DisableUserDataVhd" sap:VirtualizedContainerService.HintSize="823,2673">
    <Sequence.Variables>
      <Variable x:TypeArguments="sma:PSDataCollection(sma:PSObject)" Name="vmPool" />
      <Variable x:TypeArguments="x:String" Name="vmFarmSetting" />
      <Variable x:TypeArguments="x:String" Name="userVhdSetting" />
      <Variable x:TypeArguments="mrma:UserDataVhdSetting" Name="userDataVhdSetting" />
      <Variable x:TypeArguments="sc:Hashtable" Default="[New Hashtable()]" Name="vmFarmProperties" />
      <Variable x:TypeArguments="sma:PSDataCollection(sma:PSObject)" Default="[New PSDataCollection(Of PSObject)]" Name="null" />
    </Sequence.Variables>
    <sap:WorkflowViewStateService.ViewState>
      <scg:Dictionary x:TypeArguments="x:String, x:Object">
        <x:Boolean x:Key="IsExpanded">True</x:Boolean>
      </scg:Dictionary>
    </sap:WorkflowViewStateService.ViewState>
    <mpua:WriteVerbose DisplayName="Verbose: Input" sap:VirtualizedContainerService.HintSize="801,22" Message="[&quot;Alias: &quot; + CollectionAlias]" />
    <Sequence DisplayName="Validate" sap:VirtualizedContainerService.HintSize="801,2425">
      <sap:WorkflowViewStateService.ViewState>
        <scg:Dictionary x:TypeArguments="x:String, x:Object">
          <x:Boolean x:Key="IsExpanded">True</x:Boolean>
          <x:Boolean x:Key="IsPinned">False</x:Boolean>
        </scg:Dictionary>
      </sap:WorkflowViewStateService.ViewState>
      <mpa:GetWmiObject Amended="False" Class="Win32_RDSHCollection" DirectRead="False" DisplayName="GWMI: Pool" EnableAllPrivileges="False" Filter="[&quot;Alias = '&quot; &amp; CollectionAlias &amp; &quot;'&quot;]" sap:VirtualizedContainerService.HintSize="779,22" Impersonation="Impersonate" Namespace="ROOT\cimv2\rdms" PSAuthenticationLevel="PacketPrivacy" PSComputerName="[{RDMSServer}]" Result="[vmPool]" />
      <If Condition="[vmPool.Count &lt;&gt; 1]" DisplayName="CheckIfPoolExists" sap:VirtualizedContainerService.HintSize="779,51">
        <sap:WorkflowViewStateService.ViewState>
          <scg:Dictionary x:TypeArguments="x:String, x:Object">
            <x:Boolean x:Key="IsExpanded">False</x:Boolean>
            <x:Boolean x:Key="IsPinned">False</x:Boolean>
          </scg:Dictionary>
        </sap:WorkflowViewStateService.ViewState>
        <If.Then>
          <TerminateWorkflow sap:VirtualizedContainerService.HintSize="200,22" Reason="[String.Format(System.Globalization.CultureInfo.CurrentCulture, RDManagementResources.SpecifiedCollectionDoesNotExist, CollectionAlias)]" />
        </If.Then>
      </If>
      <Sequence DisplayName="GetUvhdObject" sap:VirtualizedContainerService.HintSize="779,184">
        <sap:WorkflowViewStateService.ViewState>
          <scg:Dictionary x:TypeArguments="x:String, x:Object">
            <x:Boolean x:Key="IsExpanded">True</x:Boolean>
            <x:Boolean x:Key="IsPinned">False</x:Boolean>
          </scg:Dictionary>
        </sap:WorkflowViewStateService.ViewState>
        <Assign sap:VirtualizedContainerService.HintSize="242,60">
          <Assign.To>
            <OutArgument x:TypeArguments="mrma:UserDataVhdSetting">[userDataVhdSetting]</OutArgument>
          </Assign.To>
          <Assign.Value>
            <InArgument x:TypeArguments="mrma:UserDataVhdSetting">[RDSessionHostUserDataVhdUtility.GetUserDataVhdSetting(RDMSServer, CollectionAlias)]</InArgument>
          </Assign.Value>
        </Assign>
      </Sequence>
      <If Condition="[userDataVhdSetting.UserVhdEnabled]" DisplayName="CheckIfUvhdIsEnabled" sap:VirtualizedContainerService.HintSize="779,1924">
        <sap:WorkflowViewStateService.ViewState>
          <scg:Dictionary x:TypeArguments="x:String, x:Object">
            <x:Boolean x:Key="IsExpanded">True</x:Boolean>
            <x:Boolean x:Key="IsPinned">False</x:Boolean>
          </scg:Dictionary>
        </sap:WorkflowViewStateService.ViewState>
        <If.Then>
          <Sequence DisplayName="UpdateUvhdSetting" sap:VirtualizedContainerService.HintSize="654,1776">
            <Sequence.Variables>
              <Variable x:TypeArguments="x:Boolean" Default="False" Name="tempResult" />
              <Variable x:TypeArguments="sma:PSDataCollection(sma:PSObject)" Name="rdshServerList" />
              <Variable x:TypeArguments="x:String" Name="policyXML" />
            </Sequence.Variables>
            <sap:WorkflowViewStateService.ViewState>
              <scg:Dictionary x:TypeArguments="x:String, x:Object">
                <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                <x:Boolean x:Key="IsPinned">False</x:Boolean>
              </scg:Dictionary>
            </sap:WorkflowViewStateService.ViewState>
            <Assign sap:VirtualizedContainerService.HintSize="632,60">
              <Assign.To>
                <OutArgument x:TypeArguments="x:Boolean">[tempResult]</OutArgument>
              </Assign.To>
              <Assign.Value>
                <InArgument x:TypeArguments="x:Boolean">[RDSessionHostUserDataVhdUtility.SetUserDataVhdSetting(RDMSServer, CollectionAlias, False, Nothing, Nothing, -1, -1)]</InArgument>
              </Assign.Value>
            </Assign>
            <If Condition="[tempResult = False]" sap:VirtualizedContainerService.HintSize="632,208">
              <sap:WorkflowViewStateService.ViewState>
                <scg:Dictionary x:TypeArguments="x:String, x:Object">
                  <x:Boolean x:Key="IsPinned">False</x:Boolean>
                  <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                </scg:Dictionary>
              </sap:WorkflowViewStateService.ViewState>
              <If.Then>
                <TerminateWorkflow sap:VirtualizedContainerService.HintSize="200,22" Reason="[RDManagementResources.UnableToSetUVHDSettings]" />
              </If.Then>
            </If>
            <mpua:WriteVerbose DisplayName="Verbose: Updated Collection Level settings" sap:VirtualizedContainerService.HintSize="632,22" Message="Updated settings for RDSH Collection" />
            <Sequence DisplayName="Update Settings on RDSH servers" sap:VirtualizedContainerService.HintSize="632,1180">
              <sap:WorkflowViewStateService.ViewState>
                <scg:Dictionary x:TypeArguments="x:String, x:Object">
                  <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                  <x:Boolean x:Key="IsPinned">False</x:Boolean>
                </scg:Dictionary>
              </sap:WorkflowViewStateService.ViewState>
              <mpa:GetWmiObject Amended="False" Class="Win32_RDSHServer" DirectRead="False" DisplayName="GWMI: RDSHServers" EnableAllPrivileges="False" Filter="[&quot;CollectionAlias = '&quot; &amp; CollectionAlias &amp; &quot;'&quot;]" sap:VirtualizedContainerService.HintSize="610,22" Impersonation="Impersonate" Namespace="ROOT\cimv2\rdms" PSAuthenticationLevel="PacketPrivacy" PSComputerName="[{RDMSServer}]" Result="[rdshServerList]" />
              <ParallelForEach x:TypeArguments="sma:PSObject" DisplayName="ParallelForEach&lt;PSObject&gt;" sap:VirtualizedContainerService.HintSize="610,994" Values="[rdshServerList]">
                <sap:WorkflowViewStateService.ViewState>
                  <scg:Dictionary x:TypeArguments="x:String, x:Object">
                    <x:Boolean x:Key="IsPinned">False</x:Boolean>
                    <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                  </scg:Dictionary>
                </sap:WorkflowViewStateService.ViewState>
                <ActivityAction x:TypeArguments="sma:PSObject">
                  <ActivityAction.Argument>
                    <DelegateInArgument x:TypeArguments="sma:PSObject" Name="rdshServer" />
                  </ActivityAction.Argument>
                  <Sequence sap:VirtualizedContainerService.HintSize="580,846">
                    <Sequence.Variables>
                      <Variable x:TypeArguments="x:String" Name="ServerName" />
                      <Variable x:TypeArguments="sma:PSDataCollection(sma:ErrorRecord)" Name="Errors" />
                    </Sequence.Variables>
                    <sap:WorkflowViewStateService.ViewState>
                      <scg:Dictionary x:TypeArguments="x:String, x:Object">
                        <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                        <x:Boolean x:Key="IsPinned">False</x:Boolean>
                      </scg:Dictionary>
                    </sap:WorkflowViewStateService.ViewState>
                    <Assign sap:VirtualizedContainerService.HintSize="558,60">
                      <Assign.To>
                        <OutArgument x:TypeArguments="sma:PSDataCollection(sma:ErrorRecord)">[Errors]</OutArgument>
                      </Assign.To>
                      <Assign.Value>
                        <InArgument x:TypeArguments="sma:PSDataCollection(sma:ErrorRecord)">[New PSDataCollection(Of ErrorRecord)]</InArgument>
                      </Assign.Value>
                    </Assign>
                    <Assign sap:VirtualizedContainerService.HintSize="558,60">
                      <Assign.To>
                        <OutArgument x:TypeArguments="x:String">[ServerName]</OutArgument>
                      </Assign.To>
                      <Assign.Value>
                        <InArgument x:TypeArguments="x:String">[CType(rdshServer.Properties("Name").Value, String)]</InArgument>
                      </Assign.Value>
                    </Assign>
                    <mpa:InlineScript Command="import-module $env:windir\System32\ServerManagerInternal\rdmanagement;&#xD;&#xA;Reset-RDSHUserDataVHD -SessionHostServers $using:ServerName" sap:VirtualizedContainerService.HintSize="558,188" PSError="[Errors]" />
                    <If Condition="[Errors.Count &gt; 0]" sap:VirtualizedContainerService.HintSize="558,294">
                      <sap:WorkflowViewStateService.ViewState>
                        <scg:Dictionary x:TypeArguments="x:String, x:Object">
                          <x:Boolean x:Key="IsPinned">False</x:Boolean>
                          <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                        </scg:Dictionary>
                      </sap:WorkflowViewStateService.ViewState>
                      <If.Then>
                        <Sequence sap:VirtualizedContainerService.HintSize="222,146">
                          <sap:WorkflowViewStateService.ViewState>
                            <scg:Dictionary x:TypeArguments="x:String, x:Object">
                              <x:Boolean x:Key="IsExpanded">True</x:Boolean>
                              <x:Boolean x:Key="IsPinned">False</x:Boolean>
                            </scg:Dictionary>
                          </sap:WorkflowViewStateService.ViewState>
                          <mpua:WriteError Category="{x:Null}" CategoryActivity="{x:Null}" CategoryReason="{x:Null}" CategoryTargetName="{x:Null}" CategoryTargetType="{x:Null}" ErrorId="{x:Null}" ErrorRecord="{x:Null}" Exception="{x:Null}" RecommendedAction="{x:Null}" TargetObject="{x:Null}" sap:VirtualizedContainerService.HintSize="200,22" Message="[Errors.Item(0).Exception.Message]" />
                        </Sequence>
                      </If.Then>
                    </If>
                  </Sequence>
                </ActivityAction>
              </ParallelForEach>
            </Sequence>
            <mpua:WriteVerbose DisplayName="Verbose: Updated RDSH Servers" sap:VirtualizedContainerService.HintSize="632,22" Message="Updated RDSH Servers" />
          </Sequence>
        </If.Then>
      </If>
    </Sequence>
    <mpua:WriteVerbose DisplayName="Verbose: Done" sap:VirtualizedContainerService.HintSize="801,22" Message="Done!" />
  </Sequence>
</Activity>

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