{"id":57088,"date":"2025-06-10T11:30:00","date_gmt":"2025-06-10T18:30:00","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/dotnet\/?p=57088"},"modified":"2025-06-10T11:30:00","modified_gmt":"2025-06-10T18:30:00","slug":"dotnet-10-preview-5","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/dotnet-10-preview-5\/","title":{"rendered":".NET 10 Preview 5 is now available!"},"content":{"rendered":"<p>Today, we are excited to announce the <strong>fifth<\/strong> preview release of .NET 10 with enhancements across the .NET Runtime, SDK, libraries, C#, ASP.NET Core, Blazor, .NET MAUI, and more. Check out the full release notes linked below and get started today.<\/p>\n<p><div  class=\"d-flex justify-content-center\"><a class=\"cta_button_link btn-primary mb-24\" href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet\/10.0\" target=\"_blank\">Download .NET 10 Preview 5<\/a><\/div><\/p>\n<p>This release contains the following improvements.<\/p>\n<h2><strong>\ud83d\udcdaLibraries<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/libraries.md#post-quantum-cryptography-pqc\">Post-Quantum Cryptography (PQC)<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/libraries.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>\u23f1\ufe0fRuntime<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/runtime.md#escape-analysis-for-delegates\">Escape Analysis for Delegate<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/runtime.md#inlining-improvements\">Inlining Improvements<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/runtime.md#arm64-write-barrier-improvements\">ARM64 Write Barrier Improvements<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/runtime.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>\ud83d\udee0\ufe0f SDK<\/strong><\/h2>\n<ul>\n<li>No new features added in this preview release.<\/li>\n<\/ul>\n<h2><strong>C#<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/csharp.md#user-defined-compound-assignment-operators\">User defined compound assignment operators<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/csharp.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>F#<\/strong><\/h2>\n<p>This release you will find updates across the <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/fsharp.md#f-language\">F# language<\/a> including scoped <code>#nowarn\/#warnon<\/code>, <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/fsharp.md#fsharpcore-standard-library\">FSharp.Core standard library<\/a>, and <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/fsharp.md#fsharpcompilerservice\">FSharp.Compiler.Service<\/a>.<\/p>\n<h2><strong>Visual Basic<\/strong><\/h2>\n<ul>\n<li>No new features added in this preview release.<\/li>\n<\/ul>\n<h2><strong>\ud83c\udf10 ASP.NET Core &amp; Blazor<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#configure-custom-security-descriptors-for-httpsys-request-queues\">Configure custom security descriptors for HTTP.sys request queues<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#validation-resolver-apis-marked-as-experimental\">Validation resolver APIs marked as experimental<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#support-for-generating-openapi-31\">Support for generating OpenAPI 3.1<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#openapi-metadata-from-xml-doc-comments\">OpenAPI metadata from XML doc comments<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#add-a-not-found-page-using-the-blazor-router\">Add a Not Found page using the Blazor Router<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md#blazor-metrics-and-tracing\">Blazor metrics and tracing<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/aspnetcore.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>\ud83d\udcf1 .NET MAUI<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/dotnetmaui.md#xaml-global-namespaces\">XAML Global Namespaces<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/dotnetmaui.md#xaml-global-namespaces\">XAML Implicit Namespaces<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/dotnetmaui.md#intercept-web-requests\">Intercept web requests<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/dotnetmaui.md\">Full Release Notes<\/a><\/li>\n<li>Full list of quality improvements on <a href=\"https:\/\/github.com\/dotnet\/maui\/releases\/\">dotnet\/maui GitHub releases<\/a>.<\/li>\n<\/ul>\n<h3><strong>\ud83e\udd16 .NET for Android<\/strong><\/h3>\n<p>This release was focused on quality improvements and build performance. A detailed list can be found on <a href=\"https:\/\/github.com\/dotnet\/android\/releases\/\">dotnet\/android GitHub releases<\/a>.<\/p>\n<h3><strong>\ud83c\udf4e .NET for iOS, Mac Catalyst, macOS, tvOS<\/strong><\/h3>\n<p>This release was focused on quality improvements and build performance. A detailed list can be found on <a href=\"https:\/\/github.com\/dotnet\/macios\/releases\/\">dotnet\/macios GitHub releases<\/a> including a list of <a href=\"https:\/\/github.com\/dotnet\/macios\/wiki\/Known-issues-in-.NET10\">Known issues<\/a>.<\/p>\n<h2><strong>\ud83d\udda5\ufe0f Windows Forms<\/strong><\/h2>\n<p>This release was focused on quality improvements and build performance. A detailed list can be found in <a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/winforms.md\">release notes<\/a>.<\/p>\n<h2><strong>\ud83d\udda5\ufe0f Windows Presentation Foundation (WPF)<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/wpf.md#xaml-grid-syntax-enhancements\">XAML Grid Syntax Enhancements<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/wpf.md#font-and-globalization-updates\">Font and Globalization Updates<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/wpf.md#fluent-theme-improvements\">Fluent Theme Improvements<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/wpf.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>\ud83c\udf81 Entity Framework Core<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/efcore.md#customdefaultconstraintnames\">Custom\u00a0Default\u00a0Constraint\u00a0Names<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/preview\/preview5\/efcore.md\">Full Release Notes<\/a><\/li>\n<\/ul>\n<h2><strong>\ud83d\udce6 Container Images<\/strong><\/h2>\n<ul>\n<li>No new features added in this preview release.<\/li>\n<\/ul>\n<h2>\ud83d\ude80 Get started<\/h2>\n<p>To get started with .NET 10, <a href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet\/10.0\">install the .NET 10 SDK<\/a>.<\/p>\n<p>If you&#8217;re on Windows using Visual Studio, we recommend installing the latest <a href=\"https:\/\/visualstudio.microsoft.com\/vs\/preview\/\">Visual Studio 2022 preview<\/a>, which now includes <a href=\"https:\/\/devblogs.microsoft.com\/visualstudio\/agent-mode-has-arrived-in-preview-for-visual-studio\/\">GitHub Copilot agent mode and MCP server support<\/a>. You can also use Visual Studio Code and the <a href=\"https:\/\/marketplace.visualstudio.com\/items?itemName=ms-dotnettools.csdevkit\">C# Dev Kit<\/a> extension with .NET 10.<\/p>\n<h2>\ud83d\udce6 Join a .NET community standup<\/h2>\n<p>Join us each week and engage with the developers and product managers behind .NET for <a href=\"https:\/\/dotnet.microsoft.com\/live\/community-standup\">community standups<\/a>.<\/p>\n<h2>\ud83d\udce2 .NET 10 Discussions<\/h2>\n<p>The team has been making <a href=\"https:\/\/aka.ms\/dotnet\/10\/preview5\">monthly announcements<\/a> alongside full <a href=\"https:\/\/github.com\/dotnet\/core\/tree\/main\/release-notes\/10.0\">release notes<\/a> on the <a href=\"https:\/\/github.com\/dotnet\/core\/discussions\/categories\/news\">dotnet\/core GitHub Discussions<\/a> and has seen great engagement and feedback from the community.<\/p>\n<h2>\ud83d\udd14 Stay up-to-date with .NET 10<\/h2>\n<p>You can stay up-to-date with all the features of .NET 10 with:<\/p>\n<ul>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/core\/whats-new\/dotnet-10\/overview\">What&#8217;s new in .NET 10<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/csharp\/whats-new\/csharp-14\">What&#8217;s new in C# 14<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/maui\/whats-new\/dotnet-10\">What&#8217;s new in .NET MAUI<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/aspnet\/core\/release-notes\/aspnetcore-10.0\">What&#8217;s new in ASP.NET Core<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/ef\/core\/what-is-new\/ef-core-10.0\/whatsnew\">What&#8217;s new in Entity Framework Core<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/desktop\/winforms\/whats-new\/net100\">What&#8217;s new in Windows Forms<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/desktop\/wpf\/whats-new\/net100\">What&#8217;s new in WPF<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/dotnet\/core\/compatibility\/10.0\">Breaking Changes in .NET 10<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/dotnet\/core\/blob\/main\/release-notes\/10.0\/README.md\">.NET 10 Releases<\/a><\/li>\n<\/ul>\n<p>Additionally, be sure to subscribe to the GitHub Discussions <a href=\"https:\/\/github.com\/dotnet\/core\/discussions\/categories\/news.atom\">RSS news feed<\/a> for all release announcements.  <\/p>\n<p>We want your feedback, so head over to the <a href=\"https:\/\/aka.ms\/dotnet\/10\/preview5\">.NET 10 Preview 5 GitHub Discussion<\/a> to discuss features and give feedback for this release.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Find out about the new features in .NET 10 Preview 5 across the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, C#, .NET MAUI, and more!<\/p>\n","protected":false},"author":11288,"featured_media":57089,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[685,7233,7509,7251,756],"tags":[7892,7744],"class_list":["post-57088","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dotnet","category-maui","category-aspnetcore","category-blazor","category-csharp","tag-dotnet-10","tag-featured-preview"],"acf":[],"blog_post_summary":"<p>Find out about the new features in .NET 10 Preview 5 across the .NET runtime, SDK, libraries, ASP.NET Core, Blazor, C#, .NET MAUI, and more!<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/57088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/users\/11288"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/comments?post=57088"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/57088\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media\/57089"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media?parent=57088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/categories?post=57088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/tags?post=57088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}