@@ -30,6 +30,25 @@ jobs:
           repository: PowerShell/PowerShellEditorServices
           path: PowerShellEditorServices
 
+      # TODO: Drop this once PowerShellEditorServices can restore again. Its
+      # nuget.config only lists an Azure DevOps feed, which returns 401
+      # (Unauthorized) for anonymous downloads, so restoring the .NET reference
+      # packs fails before any of our tests run. Add nuget.org as a source.
+      - name: Add nuget.org to the PowerShellEditorServices sources
+        shell: pwsh
+        run: |
+          $config = @(
+            '<?xml version="1.0" encoding="utf-8"?>'
+            '<configuration>'
+            '  <packageSources>'
+            '    <clear />'
+            '    <add key="PowerShellCore_PublicPackages" value="https://pkgs.dev.azure.com/powershell/PowerShell/_packaging/powershell/nuget/v3/index.json" />'
+            '    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />'
+            '  </packageSources>'
+            '</configuration>'
+          )
+          Set-Content -Path PowerShellEditorServices/nuget.config -Value $config
+
       - name: Checkout vscode-powershell
         uses: actions/checkout@v7
         with: