@@ -10,7 +10,6 @@
 using Microsoft.Extensions.Logging;
 using Microsoft.PowerShell.EditorServices.Services.DebugAdapter;
 using Microsoft.PowerShell.EditorServices.Services.PowerShell.Execution;
-using Microsoft.PowerShell.EditorServices.Services.PowerShell.Host;
 using Microsoft.PowerShell.EditorServices.Services.PowerShell.Runspace;
 
 namespace Microsoft.PowerShell.EditorServices.Services.PowerShell.Debugging
@@ -54,10 +53,7 @@ public async Task<IReadOnlyList<BreakpointDetails>> SetLineBreakpointsAsync(
 ? $"Enable-DscDebug -Breakpoint {hashtableString}"
 : "Disable-DscDebug");
 
-await executionService.ExecutePSCommandAsync(
-dscCommand,
-CancellationToken.None)
-.ConfigureAwait(false);
+await executionService.ExecutePSCommandAsync(dscCommand, CancellationToken.None).ConfigureAwait(false);
 
 // Verify all the breakpoints and return them
 foreach (BreakpointDetails breakpoint in breakpoints)
@@ -80,7 +76,7 @@ public bool IsDscResourcePath(string scriptPath)
 public static async Task<DscBreakpointCapability> GetDscCapabilityAsync(
 ILogger logger,
 IRunspaceInfo currentRunspace,
-PsesInternalHost psesHost)
+IInternalPowerShellExecutionService executionService)
 {
 // DSC support is enabled only for Windows PowerShell.
 if ((currentRunspace.PowerShellVersionDetails.Version.Major >= 6) &&
@@ -92,16 +88,13 @@ public static async Task<DscBreakpointCapability> GetDscCapabilityAsync(
 if (!isDscInstalled.HasValue)
 {
 PSCommand psCommand = new PSCommand()
-.AddScript($"$global:{DebugService.PsesGlobalVariableNamePrefix}prevProgressPreference = $ProgressPreference")
-.AddScript("$ProgressPreference = 'SilentlyContinue'")
 .AddCommand(@"Microsoft.PowerShell.Core\Import-Module")
 .AddParameter("Name", "PSDesiredStateConfiguration")
 .AddParameter("PassThru")
-.AddParameter("ErrorAction", ActionPreference.Ignore)
-.AddScript($"$ProgressPreference = $global:{DebugService.PsesGlobalVariableNamePrefix}prevProgressPreference");
+.AddParameter("ErrorAction", ActionPreference.Ignore);
 
 IReadOnlyList<PSModuleInfo> dscModule =
-await psesHost.ExecutePSCommandAsync<PSModuleInfo>(
+await executionService.ExecutePSCommandAsync<PSModuleInfo>(
 psCommand,
 CancellationToken.None,
 new PowerShellExecutionOptions { ThrowOnError = false })
@@ -113,19 +106,29 @@ await psesHost.ExecutePSCommandAsync<PSModuleInfo>(
 
 if (isDscInstalled.Value)
 {
-PSCommand psCommand = new PSCommand()
-.AddCommand("Get-DscResource")
-.AddCommand("Select-Object")
-.AddParameter("ExpandProperty", "ParentPath");
+// Note that __psEditorServices_ is DebugService.PsesGlobalVariableNamePrefix but
+// it's notoriously difficult to interpolate it in this script, which has to be a
+// single script to guarantee everything is run at once.
+PSCommand psCommand = new PSCommand().AddScript(
+"""
+try {
+$global:__psEditorServices_prevProgressPreference = $ProgressPreference
+$global:ProgressPreference = 'SilentlyContinue'
+return Get-DscResource | Select-Object -ExpandProperty ParentPath
+} finally {
+$ProgressPreference = $global:__psEditorServices_prevProgressPreference
+}
+""");
 
 IReadOnlyList<string> resourcePaths =
-await psesHost.ExecutePSCommandAsync<string>(
+await executionService.ExecutePSCommandAsync<string>(
 psCommand,
 CancellationToken.None,
 new PowerShellExecutionOptions { ThrowOnError = false }
 ).ConfigureAwait(false);
 
 logger.LogTrace($"DSC resources found: {resourcePaths.Count}");
+
 return new DscBreakpointCapability
 {
 dscResourceRootPaths = resourcePaths.ToArray()