diff --git a/app/MindWork AI Studio/Components/DataSourceSelection.razor b/app/MindWork AI Studio/Components/DataSourceSelection.razor
index 3d56bdb7..314bf2b7 100644
--- a/app/MindWork AI Studio/Components/DataSourceSelection.razor	
+++ b/app/MindWork AI Studio/Components/DataSourceSelection.razor	
@@ -67,13 +67,6 @@
                                 <MudTextSwitch Label="@T("AI-based data validation")" Value="@this.aiBasedValidation" LabelOn="@T("Yes, let the AI validate & filter the retrieved data.")" LabelOff="@T("No, use all data retrieved from the data sources.")" ValueChanged="@this.ValidationModeChanged"/>
                             }
 
-                            @if (!this.aiBasedSourceSelection && this.GetUnavailablePreselectedDataSourceNames().Length > 0)
-                            {
-                                <MudText Typo="Typo.body2" Color="Color.Warning" Class="mb-3">
-                                    @T("These data sources are preselected, but cannot be used right now, either due to data privacy or confidence-level requirements, or because they are unavailable:") @this.GetUnavailablePreselectedDataSourceNames()
-                                </MudText>
-                            }
-
                             @switch (this.aiBasedSourceSelection)
                             {
                                 case true when this.availableDataSources.Count == 0:
@@ -172,11 +165,24 @@
                                     </MudExpansionPanels>
                                     break;
                             }
+
+                            @if (!this.aiBasedSourceSelection && this.GetUnavailablePreselectedDataSources().Count > 0)
+                            {
+                                <MudJustifiedText Typo="Typo.body2" Color="Color.Warning">
+                                    @T("These data sources are preselected, but cannot be used right now, either due to data privacy or confidence-level requirements, or because they are unavailable:")
+                                </MudJustifiedText>
+                                <ul class="unavailable-data-sources mb-3 mt-1">
+                                    @foreach (var source in this.GetUnavailablePreselectedDataSources())
+                                    {
+                                        <li>@source.Name</li>
+                                    }
+                                </ul>
+                            }
                         }
                     }
                 </MudCardContent>
                 <MudCardActions>
-                    <MudButton Variant="Variant.Filled" OnClick="@(() => this.HideDataSourceSelection())">
+                    <MudButton Variant="Variant.Filled" OnClick="@this.HideDataSourceSelection">
                         @T("Close")
                     </MudButton>
                 </MudCardActions>
diff --git a/app/MindWork AI Studio/Components/DataSourceSelection.razor.cs b/app/MindWork AI Studio/Components/DataSourceSelection.razor.cs
index 6f42d9c0..714a433c 100644
--- a/app/MindWork AI Studio/Components/DataSourceSelection.razor.cs	
+++ b/app/MindWork AI Studio/Components/DataSourceSelection.razor.cs	
@@ -183,19 +183,19 @@ public partial class DataSourceSelection : MSGComponentBase
     }
 
     /// <summary>
-    /// Names the preselected data sources which the filters removed.
+    /// Collects the preselected data sources which the filters removed.
     /// </summary>
     /// <remarks>
-    /// This list shows what survived the filters, while the preselection keeps what the user asked
-    /// for. Without this, a preselected source which cannot be used right now is simply missing
-    /// from the list, and nothing says so. Preselected ids without a configured source are left
-    /// out: that source is gone, not unavailable.
+    /// The list of available sources shows what survived the filters, while the preselection keeps
+    /// what the user asked for. Without this, a preselected source which cannot be used right now
+    /// is simply missing from that list, and nothing says so. Preselected ids without a configured
+    /// source are left out: that source is gone, not unavailable.
     /// </remarks>
-    /// <returns>The names of the unusable preselected data sources, or an empty string when there are none.</returns>
-    private string GetUnavailablePreselectedDataSourceNames()
+    /// <returns>The unusable preselected data sources, or an empty list when there are none.</returns>
+    private IReadOnlyList<IDataSource> GetUnavailablePreselectedDataSources()
     {
         var availableDataSourceIds = this.availableDataSources.Select(ds => ds.Id).ToHashSet(StringComparer.Ordinal);
-        return string.Join(", ", this.GetDataSourcesFromConfiguredIds().Where(ds => !availableDataSourceIds.Contains(ds.Id)).Select(ds => ds.Name));
+        return this.GetDataSourcesFromConfiguredIds().Where(ds => !availableDataSourceIds.Contains(ds.Id)).ToList();
     }
     
     private async Task LoadAndApplyFilters()
diff --git a/app/MindWork AI Studio/Components/DataSourceSelection.razor.css b/app/MindWork AI Studio/Components/DataSourceSelection.razor.css
new file mode 100644
index 00000000..73c446c8
--- /dev/null
+++ b/app/MindWork AI Studio/Components/DataSourceSelection.razor.css	
@@ -0,0 +1,18 @@
+/*
+ * A plain list renders without markers and without indentation here: something in the global
+ * styles takes both off. This is an enumeration of names and wants to read as one, so it states
+ * marker, indentation and spacing itself. MudBlazor's Markdown styles fight the same fight for
+ * their own lists, and need an !important on the display to win it -- hence the one below.
+ */
+.unavailable-data-sources {
+    max-height: 10em;
+    overflow-y: auto;
+    overflow-wrap: anywhere;
+    margin-top: 0;
+    padding-left: 1.5em;
+    list-style: disc outside;
+}
+
+.unavailable-data-sources li {
+    display: list-item !important;
+}
diff --git a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua
index c974e135..b75ab565 100644
--- a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
@@ -3903,6 +3903,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T168406579"] = "KI-a
 -- AI-based data validation
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1744745490"] = "KI-gestützte Datenvalidierung"
 
+-- These data sources are preselected, but cannot be used right now, either due to data privacy or confidence-level requirements, or because they are unavailable:
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1852534051"] = "Diese Datenquellen sind vorausgewählt, können derzeit jedoch nicht verwendet werden – entweder aufgrund von Datenschutz- oder Vertrauensanforderungen oder weil sie nicht verfügbar sind:"
+
 -- Yes, I want to use data sources.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1975014927"] = "Ja, ich möchte Datenquellen verwenden."
 
@@ -11589,9 +11592,6 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::DATASOURCESELECTIONPROCESSES::AGENTICSRCS
 -- Automatically selects the appropriate data sources based on the last prompt. Applies a heuristic reduction at the end to reduce the number of data sources.
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::DATASOURCESELECTIONPROCESSES::AGENTICSRCSELWITHDYNHEUR::T648937779"] = "Wählt automatisch die passenden Datenquellen basierend auf der letzten Eingabe aus. Wendet am Ende eine heuristische Reduzierung an, um die Anzahl der Datenquellen zu verringern."
 
--- None of your selected data sources could be used. This answer was created without them.
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::RAGPROCESSES::AISRCSELWITHRETCTXVAL::T2995829558"] = "Keine Ihrer ausgewählten Datenquellen konnte verwendet werden. Diese Antwort wurde ohne sie erstellt."
-
 -- This RAG process filters data sources, automatically selects appropriate sources, optionally allows manual source selection, retrieves data, and automatically validates the retrieval context.
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::RAGPROCESSES::AISRCSELWITHRETCTXVAL::T3047786484"] = "Dieser RAG-Prozess filtert Datenquellen, wählt automatisch passende Quellen aus, ermöglicht optional die manuelle Auswahl von Quellen, ruft Daten ab und überprüft den Abrufkontext automatisch."
 
diff --git a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua
index 490d3f64..7f89f73b 100644
--- a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
@@ -3903,6 +3903,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T168406579"] = "AI-S
 -- AI-based data validation
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1744745490"] = "AI-based data validation"
 
+-- These data sources are preselected, but cannot be used right now, either due to data privacy or confidence-level requirements, or because they are unavailable:
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1852534051"] = "These data sources are preselected, but cannot be used right now, either due to data privacy or confidence-level requirements, or because they are unavailable:"
+
 -- Yes, I want to use data sources.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::DATASOURCESELECTION::T1975014927"] = "Yes, I want to use data sources."
 
@@ -11589,9 +11592,6 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::DATASOURCESELECTIONPROCESSES::AGENTICSRCS
 -- Automatically selects the appropriate data sources based on the last prompt. Applies a heuristic reduction at the end to reduce the number of data sources.
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::DATASOURCESELECTIONPROCESSES::AGENTICSRCSELWITHDYNHEUR::T648937779"] = "Automatically selects the appropriate data sources based on the last prompt. Applies a heuristic reduction at the end to reduce the number of data sources."
 
--- None of your selected data sources could be used. This answer was created without them.
-UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::RAGPROCESSES::AISRCSELWITHRETCTXVAL::T2995829558"] = "None of your selected data sources could be used. This answer was created without them."
-
 -- This RAG process filters data sources, automatically selects appropriate sources, optionally allows manual source selection, retrieves data, and automatically validates the retrieval context.
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::RAG::RAGPROCESSES::AISRCSELWITHRETCTXVAL::T3047786484"] = "This RAG process filters data sources, automatically selects appropriate sources, optionally allows manual source selection, retrieves data, and automatically validates the retrieval context."