Merge main into live

.github/workflows/check-for-build-warnings.yml

@@ -16,7 +16,7 @@ jobs:
         pull-requests: write
     steps:
     - name: Harden Runner
-      uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
       with:
         egress-policy: audit
 

.github/workflows/cleanrepo-orphaned-articles.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-orphaned-images.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-orphaned-includes.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-orphaned-snippets.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-redirect-hops.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-relative-links.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/cleanrepo-replace-redirects.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/dependabot-bot.yml

@@ -26,7 +26,7 @@ jobs:
     # Checkout the repo into the workspace within the VM
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/dependency-review.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/do-not-merge-label-check.yml

@@ -22,7 +22,7 @@ jobs:
         - 'DO NOT MERGE'
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/docs-verifier.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/live-protection.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/markdownlint.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/profanity-filter.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
     - name: Harden Runner
-      uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
       with:
         egress-policy: audit
 

.github/workflows/quest-bulk.yml

@@ -28,7 +28,7 @@ jobs:
     if: ${{ github.repository_owner == 'dotnet' }}
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/quest.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 

.github/workflows/scorecards.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+        uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
         with:
           egress-policy: audit
 
@@ -71,6 +71,6 @@ jobs:
 
       # Upload the results to GitHub's code scanning dashboard.
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@6bc82e05fd0ea64601dd4b465378bbcf57de0314 # v3.29.5
+        uses: github/codeql-action/upload-sarif@45cbd0c69e560cd9e7cd7f8c32362050c9b7ded2 # v3.29.5
         with:
           sarif_file: results.sarif

.github/workflows/snippets5000.yml

@@ -14,7 +14,7 @@ on:
         default: 'Manual run'
 
 env:
-  DOTNET_VERSION: '10.0.*'
+  DOTNET_VERSION: '11.0.*'
   DOTNET_QUALITY: 'preview'
   DOTNET_DO_INSTALL: 'true' # To install a version of .NET not provided by the runner, set to true
   EnableNuGetPackageRestore: 'True'
@@ -31,7 +31,7 @@ jobs:
     steps:
     # Checkout the repository for the PR
     - name: Harden Runner
-      uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
       with:
         egress-policy: audit
 

.github/workflows/stale.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Harden Runner
-      uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+      uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
       with:
         egress-policy: audit
 

.github/workflows/version-sweep.yml

@@ -34,7 +34,7 @@ jobs:
             # Start the .NET version updater action
             # A composite of the .NET Version Sweeper and the .NET Upgrade Assistant
             - name: Harden Runner
-              uses: step-security/harden-runner@e3f713f2d8f53843e71c69a996d56f51aa9adfb9 # v2.14.1
+              uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
               with:
                 egress-policy: audit
 

.openpublishing.redirection.csharp.json

@@ -5014,7 +5014,7 @@
         },
         {
             "source_path_from_root": "/docs/csharp/whats-new.md",
-            "redirect_url": "/dotnet/csharp/whats-new/csharp-14",
+            "redirect_url": "/dotnet/csharp/whats-new/csharp-15",
             "redirect_document_id": true
         },
         {
@@ -5055,7 +5055,7 @@
         },
         {
             "source_path_from_root": "/docs/csharp/whats-new/index.md",
-            "redirect_url": "/dotnet/csharp/whats-new/csharp-14",
+            "redirect_url": "/dotnet/csharp/whats-new/csharp-15",
             "ms.custom": "updateeachrelease"
         },
         {

.openpublishing.redirection.framework.json

@@ -2023,6 +2023,11 @@
             "redirect_url": "/dotnet/framework/release-notes/2024/04-09-april-security-and-quality-rollup",
             "redirect_document_id": true
         },
+        {
+            "source_path_from_root": "/docs/framework/release-notes/2026/01-29-october-cumulative-update-preview.md",
+            "redirect_url": "/dotnet/framework/release-notes/2026/01-29-january-cumulative-update-preview",
+            "redirect_document_id": true
+        },
         {
             "source_path_from_root": "/docs/framework/resources/creating-resource-files-for-desktop-apps.md",
             "redirect_url": "/dotnet/core/extensions/create-resource-files",

docfx.json

@@ -74,6 +74,7 @@
                     "Compiler Breaking Changes - DotNet 8.md",
                     "Compiler Breaking Changes - DotNet 9.md",
                     "Compiler Breaking Changes - DotNet 10.md",
+                    "Compiler Breaking Changes - DotNet 11.md",
                     "Deviations from Standard.md"
                 ],
                 "src": "_roslyn/docs/compilers/CSharp",
@@ -513,11 +514,12 @@
                 "_csharplang/proposals/csharp-12.0/*.md": "08/15/2023",
                 "_csharplang/proposals/csharp-13.0/*.md": "10/31/2024",
                 "_csharplang/proposals/csharp-14.0/*.md": "08/06/2025",
-                "_csharplang/proposals/*.md": "08/06/2025",
+                "_csharplang/proposals/*.md": "02/04/2025",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md": "11/08/2022",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 8.md": "11/08/2023",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md": "11/09/2024",
-                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 10.md": "01/09/2024",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 10.md": "11/09/2024",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 11.md": "01/09/2025",
                 "_roslyn/docs/compilers/CSharp/Deviations from Standard.md": "04/24/2025",
                 "_vblang/spec/*.md": "07/21/2017"
             },
@@ -693,10 +695,12 @@
                 "_csharplang/proposals/csharp-14.0/ignored-directives.md": "Ignored preprocessor directives",
                 "_csharplang/proposals/csharp-14.0/extension-operators.md": "Extension operators",
                 "_csharplang/proposals/csharp-14.0/optional-and-named-parameters-in-expression-trees.md": "Optional and named parameters in expression trees",
+                "_csharplang/proposals/collection-expression-arguments.md": "Collection expression arguments",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md": "C# compiler breaking changes since C# 10",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 8.md": "C# compiler breaking changes since C# 11",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md": "C# compiler breaking changes since C# 12",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 10.md": "C# compiler breaking changes since C# 13",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 11.md": "C# compiler breaking changes since C# 14",
                 "_roslyn/docs/compilers/CSharp/Deviations from Standard.md": "Deviations from the C# standard",
                 "_vblang/spec/introduction.md": "Introduction",
                 "_vblang/spec/lexical-grammar.md": "Lexical grammar",
@@ -819,10 +823,12 @@
                 "_csharplang/proposals/csharp-14.0/ignored-directives.md": "This proposal allows a source file to include ignored directives. In most cases, ignored directives are used for file-based apps, for example `#!`",
                 "_csharplang/proposals/csharp-14.0/extension-operators.md": "This proposal extends the proposal for extensions to include *extension operators*, where an operator can be an extension member.",
                 "_csharplang/proposals/csharp-14.0/optional-and-named-parameters-in-expression-trees.md": "This proposal allows an expression tree to include named and optional parameters. This enables expression trees to be more flexible in how they are constructed.",
+                "_csharplang/proposals/collection-expression-arguments.md": "This proposal introduces collection expression arguments.",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md": "Learn about any breaking changes since the initial release of C# 10 and included in C# 11",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 8.md": "Learn about any breaking changes since the initial release of C# 11 and included in C# 12",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md": "Learn about any breaking changes since the initial release of C# 12 and included in C# 13",
                 "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 10.md": "Learn about any breaking changes since the initial release of C# 13 and included in C# 14",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 11.md": "Learn about any breaking changes since the initial release of C# 14 and included in C# 15",
                 "_roslyn/docs/compilers/CSharp/Deviations from Standard.md": "Learn about any deviations from the C# standard",
                 "_vblang/spec/introduction.md": "This chapter provides an overview of the Visual Basic language and its design goals.",
                 "_vblang/spec/lexical-grammar.md": "This chapter defines the lexical grammar for Visual Basic.",

docs/ai/azure-ai-services-authentication.md

@@ -1,14 +1,14 @@
 ---
 title: Authenticate to Azure OpenAI using .NET
-description: Learn about the different options to authenticate to Azure OpenAI and other services using .NET
+description: Learn about the different options to authenticate to Azure OpenAI and other services using .NET.
 author: alexwolfmsft
 ms.topic: concept-article
 ms.date: 04/09/2025
 ---
 
 # Azure AI services authentication and authorization using .NET
 
-Application requests to Azure AI Services must be authenticated. In this article, you explore the options available to authenticate to Azure OpenAI and other AI services using .NET. These concepts apply to the Semantic Kernel SDK, as well as SDKs from specific services such as Azure OpenAI. Most AI services offer two primary ways to authenticate apps and users:
+Application requests to Azure AI Services must be authenticated. In this article, you explore the options available to authenticate to Azure OpenAI and other AI services using .NET. Most AI services offer two primary ways to authenticate apps and users:
 
 - **Key-based authentication** provides access to an Azure service using secret key values. These secret values are sometimes known as API keys or access keys depending on the service.
 - **Microsoft Entra ID** provides a comprehensive identity and access management solution to ensure that the correct identities have the correct level of access to different Azure resources.
@@ -80,18 +80,18 @@ az login
 
 ### Configure the app code
 
-Use the [`Azure.Identity`](/dotnet/api/overview/azure/identity-readme) client library from the Azure SDK to implement Microsoft Entra authentication in your code. The `Azure.Identity` libraries include the `DefaultAzureCredential` class, which automatically discovers available Azure credentials based on the current environment and tooling available. Visit the [Azure SDK for .NET](/dotnet/api/azure.identity.defaultazurecredential) documentation for the full set of supported environment credentials and the order in which they are searched.
+Use the [`Azure.Identity`](/dotnet/api/overview/azure/identity-readme) client library from the Azure SDK to implement Microsoft Entra authentication in your code. The `Azure.Identity` libraries include the `DefaultAzureCredential` class, which automatically discovers available Azure credentials based on the current environment and tooling available. For the full set of supported environment credentials and the order in which they are searched, see the [Azure SDK for .NET](/dotnet/api/azure.identity.defaultazurecredential) documentation.
 
-For example, configure Semantic Kernel to authenticate using `DefaultAzureCredential` using the following code:
+For example, configure Azure OpenAI to authenticate using `DefaultAzureCredential` using the following code:
 
 ```csharp
-Kernel kernel = Kernel
-    .CreateBuilder()
-    .AddAzureOpenAITextGeneration(
-        "your-model",
-        "your-endpoint",
-        new DefaultAzureCredential())
-    .Build();
+AzureOpenAIClient azureClient =
+    new(
+        new Uri(endpoint),
+        new DefaultAzureCredential(new DefaultAzureCredentialOptions()
+            { TenantId = tenantId }
+        )
+    );
 ```
 
 `DefaultAzureCredential` enables apps to be promoted from local development to production without code changes. For example, during development `DefaultAzureCredential` uses your local user credentials from Visual Studio or the Azure CLI to authenticate to the AI service. When the app is deployed to Azure, `DefaultAzureCredential` uses the managed identity that is assigned to your app.

docs/ai/conceptual/embeddings.md

@@ -49,14 +49,14 @@ You generate embeddings for your raw data by using an AI embedding model, which
 
 ### Store and process embeddings in a vector database
 
-After you generate embeddings, you'll need a way to store them so you can later retrieve them with calls to an LLM. Vector databases are designed to store and process vectors, so they're a natural home for embeddings. Different vector databases offer different processing capabilities, so you should choose one based on your raw data and your goals. For information about your options, see [available vector database solutions](vector-databases.md#semantic-kernel-vector-database-solutions).
+After you generate embeddings, you'll need a way to store them so you can later retrieve them with calls to an LLM. Vector databases are designed to store and process vectors, so they're a natural home for embeddings. Different vector databases offer different processing capabilities, so you should choose one based on your raw data and your goals. For information about your options, see [Vector databases for .NET + AI](vector-databases.md).
 
 ### Using embeddings in your LLM solution
 
-When building LLM-based applications, you can use Semantic Kernel to integrate embedding models and vector stores, so you can quickly pull in text data, and generate and store embeddings. This lets you use a vector database solution to store and retrieve semantic memories.
+When building LLM-based applications, you can use Agent Framework to integrate embedding models and vector stores, so you can quickly pull in text data, and generate and store embeddings. This lets you use a vector database solution to store and retrieve semantic memories.
 
 ## Related content
 
 - [How GenAI and LLMs work](how-genai-and-llms-work.md)
 - [Retrieval-augmented generation](rag.md)
-- [Training: Develop AI agents with Azure OpenAI and Semantic Kernel](/training/paths/develop-ai-agents-azure-open-ai-semantic-kernel-sdk/)
+- [Training: Develop an AI agent with Microsoft Agent Framework](/training/modules/develop-ai-agent-with-semantic-kernel/)