MindWorkAI · Sabrina-devops · May 5, 2026
diff --git a/app/MindWork AI Studio/Assistants/DocumentAnalysis/DocumentAnalysisAssistant.razor.cs b/app/MindWork AI Studio/Assistants/DocumentAnalysis/DocumentAnalysisAssistant.razor.cs
@@ -417,6 +417,13 @@ private void ApplyPolicyPreselection(bool preferPolicyPreselection = false)
         }
 
         // Try to apply the policy preselection:
+        if (Settings.Provider.IsNoProviderPreselection(this.selectedPolicy.PreselectedProvider))
+        {
+            this.ProviderSettings = Settings.Provider.NONE;
+            this.CurrentProfile = this.ResolveProfileSelection();
+            return;
+        }
+
         var policyProvider = this.SettingsManager.ConfigurationData.Providers.FirstOrDefault(x => x.Id == this.selectedPolicy.PreselectedProvider);
         if (policyProvider is not null && policyProvider.UsedLLMProvider.GetConfidence(this.SettingsManager).Level >= minimumLevel)
         {
@@ -763,7 +770,9 @@ private string GenerateLuaPolicyExport()
                      ["MinimumProviderConfidence"] = "{{this.selectedPolicy.MinimumProviderConfidence}}",
 
                      -- Optional: preselect a provider or profile by ID.
-                     -- The IDs must exist in CONFIG["LLM_PROVIDERS"] or CONFIG["PROFILES"].
+                     -- Use an empty provider ID to fall back to the app default provider.
+                     -- Use "{{Settings.Provider.NO_PROVIDER_PRESELECTION_ID}}" to explicitly preselect no provider.
+                     -- Any other IDs must exist in CONFIG["LLM_PROVIDERS"] or CONFIG["PROFILES"].
                      ["PreselectedProvider"] = "{{preselectedProvider}}",
                      ["PreselectedProfile"] = "{{preselectedProfile}}",
 

diff --git a/app/MindWork AI Studio/Assistants/I18N/allTexts.lua b/app/MindWork AI Studio/Assistants/I18N/allTexts.lua
@@ -2191,6 +2191,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T20906218
 -- Use app default
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3672477670"] = "Use app default"
 
+-- No provider
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3740605451"] = "No provider"
+
 -- No shortcut configured
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONSHORTCUT::T3099115336"] = "No shortcut configured"
 

diff --git a/app/MindWork AI Studio/Components/ConfigurationProviderSelection.razor.cs b/app/MindWork AI Studio/Components/ConfigurationProviderSelection.razor.cs
@@ -4,6 +4,7 @@
 using AIStudio.Settings;
 using AIStudio.Tools.PluginSystem;
 using Microsoft.AspNetCore.Components;
+using SettingsProvider = AIStudio.Settings.Provider;
 
 namespace AIStudio.Components;
 
@@ -38,8 +39,11 @@ public partial class ConfigurationProviderSelection : MSGComponentBase
     [SuppressMessage("Usage", "MWAIS0001:Direct access to `Providers` is not allowed")]
     private IEnumerable<ConfigurationSelectData<string>> FilteredData()
     {
-        if(this.Component is not Tools.Components.NONE and not Tools.Components.APP_SETTINGS)
+        if(this.Component.SupportsAppDefaultProviderSelection())
+        {
             yield return new(T("Use app default"), string.Empty);
+            yield return new(T("No provider"), SettingsProvider.NO_PROVIDER_PRESELECTION_ID);
+        }
 
         // Get the minimum confidence level for this component, and/or the enforced global minimum confidence level:
         var minimumLevel = this.SettingsManager.GetMinimumConfidenceLevel(this.Component);
@@ -68,11 +72,11 @@ private IEnumerable<ConfigurationSelectData<string>> FilteredData()
         {
             case Event.CONFIGURATION_CHANGED:
 
-                if(string.IsNullOrWhiteSpace(this.SelectedValue()))
+                if(string.IsNullOrWhiteSpace(this.SelectedValue()) || SettingsProvider.IsNoProviderPreselection(this.SelectedValue()))
                     break;
 
                 // Check if the selected value is still valid:
-                if (this.Data.All(x => x.Value != this.SelectedValue()))
+                if (this.FilteredData().All(x => x.Value != this.SelectedValue()))
                 {
                     this.SelectedValue = () => string.Empty;
                     this.SelectionUpdate(string.Empty);

diff --git a/...indWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua b/...indWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua
@@ -2193,6 +2193,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T20906218
 -- Use app default
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3672477670"] = "App-Standard verwenden"
 
+-- No provider
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3740605451"] = "Kein Anbieter"
+
 -- No shortcut configured
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONSHORTCUT::T3099115336"] = "Keinen Tastaturkurzbefehl konfiguriert"
 

diff --git a/...indWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua b/...indWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua
@@ -2193,6 +2193,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T20906218
 -- Use app default
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3672477670"] = "Use app default"
 
+-- No provider
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONPROVIDERSELECTION::T3740605451"] = "No provider"
+
 -- No shortcut configured
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::CONFIGURATIONSHORTCUT::T3099115336"] = "No shortcut configured"
 

diff --git a/app/MindWork AI Studio/Settings/Provider.cs b/app/MindWork AI Studio/Settings/Provider.cs
@@ -36,6 +36,8 @@ public sealed record Provider(
 {
     private static readonly ILogger<Provider> LOGGER = Program.LOGGER_FACTORY.CreateLogger<Provider>();
 
+    public const string NO_PROVIDER_PRESELECTION_ID = "__NO_PROVIDER__";
+
     public static readonly Provider NONE = new();
 
     public Provider() : this(
@@ -66,6 +68,8 @@ public override string ToString()
     }
 
     #endregion
+
+    public static bool IsNoProviderPreselection(string? providerId) => providerId == NO_PROVIDER_PRESELECTION_ID;
 
     #region Implementation of ISecretId
 

diff --git a/app/MindWork AI Studio/Settings/SettingsManager.cs b/app/MindWork AI Studio/Settings/SettingsManager.cs
@@ -256,9 +256,10 @@ private static string GetPrimaryLanguage(string localeTag)
     public Provider GetPreselectedProvider(Tools.Components component, string? currentProviderId = null, bool usePreselectionBeforeCurrentProvider = false)
     {
         var minimumLevel = this.GetMinimumConfidenceLevel(component);
+        var hasExplicitNoProviderPreselection = component.HasExplicitNoProviderPreselection(this);
 
         // When there is only one provider, and it has a confidence level that is high enough, we return it:
-        if (this.ConfigurationData.Providers.Count == 1 && this.ConfigurationData.Providers[0].UsedLLMProvider.GetConfidence(this).Level >= minimumLevel)
+        if (!hasExplicitNoProviderPreselection && this.ConfigurationData.Providers.Count == 1 && this.ConfigurationData.Providers[0].UsedLLMProvider.GetConfidence(this).Level >= minimumLevel)
             return this.ConfigurationData.Providers[0];
 
         // Is there a current provider with a sufficiently high confidence level?
@@ -290,6 +291,9 @@ public Provider GetPreselectedProvider(Tools.Components component, string? curre
         //
         if(currentProvider != Provider.NONE)
             return currentProvider;
+
+        if (hasExplicitNoProviderPreselection)
+            return Provider.NONE;
 
         //
         // Case: The current provider should be used before the preselected provider,
@@ -308,6 +312,7 @@ public Provider GetPreselectedProvider(Tools.Components component, string? curre
     public Provider GetChatProviderForLoadedChat(string? chatProviderId = null)
     {
         var minimumLevel = this.GetMinimumConfidenceLevel(Tools.Components.CHAT);
+        var hasExplicitNoChatProviderPreselection = Tools.Components.CHAT.HasExplicitNoProviderPreselection(this);
 
         bool IsSelectableProvider(Provider provider) =>
             provider != Provider.NONE
@@ -333,6 +338,9 @@ bool IsSelectableProvider(Provider provider) =>
         if (defaultChatProvider is not null)
             return defaultChatProvider;
 
+        if (hasExplicitNoChatProviderPreselection)
+            return Provider.NONE;
+
         var defaultAppProvider = FindProviderById(this.ConfigurationData.App.PreselectedProvider);
         if (defaultAppProvider is not null)
             return defaultAppProvider;

diff --git a/app/MindWork AI Studio/Tools/ComponentsExtensions.cs b/app/MindWork AI Studio/Tools/ComponentsExtensions.cs
@@ -8,6 +8,17 @@ namespace AIStudio.Tools;
 public static class ComponentsExtensions
 {
     private static string TB(string fallbackEN) => I18N.I.T(fallbackEN, typeof(ComponentsExtensions).Namespace, nameof(ComponentsExtensions));
+
+    public static bool SupportsAppDefaultProviderSelection(this Components component) => component switch
+    {
+        Components.NONE => false,
+        Components.APP_SETTINGS => false,
+        Components.AGENT_TEXT_CONTENT_CLEANER => false,
+        Components.AGENT_DATA_SOURCE_SELECTION => false,
+        Components.AGENT_RETRIEVAL_CONTEXT_VALIDATION => false,
+        Components.AGENT_ASSISTANT_PLUGIN_AUDIT => false,
+        _ => true,
+    };
 
     public static bool AllowSendTo(this Components component) => component switch
     {
@@ -103,9 +114,40 @@ public static class ComponentsExtensions
         _ => default,
     };
 
+    public static bool HasExplicitNoProviderPreselection(this Components component, SettingsManager settingsManager)
+    {
+        var preselectedProviderId = component switch
+        {
+            Components.GRAMMAR_SPELLING_ASSISTANT => settingsManager.ConfigurationData.GrammarSpelling.PreselectOptions ? settingsManager.ConfigurationData.GrammarSpelling.PreselectedProvider : string.Empty,
+            Components.ICON_FINDER_ASSISTANT => settingsManager.ConfigurationData.IconFinder.PreselectOptions ? settingsManager.ConfigurationData.IconFinder.PreselectedProvider : string.Empty,
+            Components.REWRITE_ASSISTANT => settingsManager.ConfigurationData.RewriteImprove.PreselectOptions ? settingsManager.ConfigurationData.RewriteImprove.PreselectedProvider : string.Empty,
+            Components.PROMPT_OPTIMIZER_ASSISTANT => settingsManager.ConfigurationData.PromptOptimizer.PreselectOptions ? settingsManager.ConfigurationData.PromptOptimizer.PreselectedProvider : string.Empty,
+            Components.TRANSLATION_ASSISTANT => settingsManager.ConfigurationData.Translation.PreselectOptions ? settingsManager.ConfigurationData.Translation.PreselectedProvider : string.Empty,
+            Components.AGENDA_ASSISTANT => settingsManager.ConfigurationData.Agenda.PreselectOptions ? settingsManager.ConfigurationData.Agenda.PreselectedProvider : string.Empty,
+            Components.CODING_ASSISTANT => settingsManager.ConfigurationData.Coding.PreselectOptions ? settingsManager.ConfigurationData.Coding.PreselectedProvider : string.Empty,
+            Components.TEXT_SUMMARIZER_ASSISTANT => settingsManager.ConfigurationData.TextSummarizer.PreselectOptions ? settingsManager.ConfigurationData.TextSummarizer.PreselectedProvider : string.Empty,
+            Components.EMAIL_ASSISTANT => settingsManager.ConfigurationData.EMail.PreselectOptions ? settingsManager.ConfigurationData.EMail.PreselectedProvider : string.Empty,
+            Components.LEGAL_CHECK_ASSISTANT => settingsManager.ConfigurationData.LegalCheck.PreselectOptions ? settingsManager.ConfigurationData.LegalCheck.PreselectedProvider : string.Empty,
+            Components.SYNONYMS_ASSISTANT => settingsManager.ConfigurationData.Synonyms.PreselectOptions ? settingsManager.ConfigurationData.Synonyms.PreselectedProvider : string.Empty,
+            Components.MY_TASKS_ASSISTANT => settingsManager.ConfigurationData.MyTasks.PreselectOptions ? settingsManager.ConfigurationData.MyTasks.PreselectedProvider : string.Empty,
+            Components.JOB_POSTING_ASSISTANT => settingsManager.ConfigurationData.JobPostings.PreselectOptions ? settingsManager.ConfigurationData.JobPostings.PreselectedProvider : string.Empty,
+            Components.BIAS_DAY_ASSISTANT => settingsManager.ConfigurationData.BiasOfTheDay.PreselectOptions ? settingsManager.ConfigurationData.BiasOfTheDay.PreselectedProvider : string.Empty,
+            Components.ERI_ASSISTANT => settingsManager.ConfigurationData.ERI.PreselectOptions ? settingsManager.ConfigurationData.ERI.PreselectedProvider : string.Empty,
+            Components.I18N_ASSISTANT => settingsManager.ConfigurationData.I18N.PreselectOptions ? settingsManager.ConfigurationData.I18N.PreselectedProvider : string.Empty,
+            Components.SLIDE_BUILDER_ASSISTANT => settingsManager.ConfigurationData.SlideBuilder.PreselectOptions ? settingsManager.ConfigurationData.SlideBuilder.PreselectedProvider : string.Empty,
+            Components.CHAT => settingsManager.ConfigurationData.Chat.PreselectOptions ? settingsManager.ConfigurationData.Chat.PreselectedProvider : string.Empty,
+            _ => string.Empty,
+        };
+
+        return Settings.Provider.IsNoProviderPreselection(preselectedProviderId);
+    }
+
     [SuppressMessage("Usage", "MWAIS0001:Direct access to `Providers` is not allowed")]
     public static AIStudio.Settings.Provider PreselectedProvider(this Components component, SettingsManager settingsManager)
     {
+        if (component.HasExplicitNoProviderPreselection(settingsManager))
+            return Settings.Provider.NONE;
+
         var preselectedProvider = component switch
         {
             Components.GRAMMAR_SPELLING_ASSISTANT => settingsManager.ConfigurationData.GrammarSpelling.PreselectOptions ? settingsManager.ConfigurationData.Providers.FirstOrDefault(x => x.Id == settingsManager.ConfigurationData.GrammarSpelling.PreselectedProvider) : null,

diff --git a/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md b/app/MindWork AI Studio/wwwroot/changelog/v26.4.1.md
@@ -10,6 +10,7 @@
 - Added pre-call validation to check if the selected model exists for the provider before making the request.
 - Added math rendering in chats for LaTeX display formulas, including block formats such as `$$ ... $$` and `\[ ... \]`.
 - Added support for mandatory information notices in configuration plugins. Organizations can now require users to read and confirm important information before continuing in AI Studio.
+- Added "No provider" option in the internal settings of chat and assistants
 - Released the document analysis assistant after an intense testing phase.
 - Improved enterprise deployment for organizations: administrators can now provide up to 10 centrally managed enterprise configuration slots, use policy files on Linux and macOS, and continue using older configuration formats as a fallback during migration.
 - Improved transparency on the information page by showing configured mandatory notices together with their source and confirmation status.