.net Desktop Runtime 8 (2025)

dotnet publish -c Release -r win-x64 --self-contained true -p:PublishSingleFile=true Zero runtime dependencies. Works on Windows 7, 10, 11, and Server 2016+. Cons: Large file size (~70-120 MB per app). Must redeploy to update runtime. Strategy 2: Bootstrap with the Official Detector (The "User-Friendly" Way) Keep your app small (framework-dependent) but add a runtime check on startup.

April 13, 2026 | Read Time: 4 minutes

Mastering the .NET Desktop Runtime 8: Solving the "Missing Runtime" Nightmare for Good

if (result == MessageBoxResult.Yes)

// In App constructor or Main() if (!IsDesktopRuntimeInstalled())

const string runtimeKey = @"SOFTWARE\dotnet\Setup\InstalledVersions\x64\sharedfx\Microsoft.WindowsDesktop.App"; using var key = Registry.LocalMachine.OpenSubKey(runtimeKey); var installedVersion = key?.GetValue("Version") as string;

If you have ever shipped a WPF or Windows Forms application, you have received that support ticket: "The app won't open. It says something about 'missing runtime'."

// Direct download link for the Desktop Runtime Process.Start(new ProcessStartInfo FileName = "https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=win-x64&apphost_version=8.0.4", UseShellExecute = true );