blazor

On October 29, 2026 Microsoft announced Syncfusion as a Blazor contributor. The headline is Syncfusion.Blazor.Toolkit 2.0.1: 17 MIT-licensed components for net8.0, net9.0 and net10.0, free for commercial use with no license key. Here is what is in it, how to wire it up, and where the commercial line is drawn.

MudBlazor 9.12.0 fixes a long-standing race in MudAutocomplete, MudDataGrid and MudTable: the result of the search that finished last used to win, not the one started last. Here is how the fix works and what changes for your ServerData and SearchFunc code.

Infragistics open-sourced more than 50 Ignite UI for Blazor controls under MIT, shipped as IgniteUI.Blazor.Lite and IgniteUI.Blazor.GridLite 1.0.0 for net8.0, net9.0 and net10.0. Here is what is free, how to wire it up, and the gotchas.

.NET MAUI 10.0.120 turns on AllowDrop for the Windows BlazorWebView and registers AndroidX DropDataContentProvider on Android, so Blazor Hybrid drop zones work without platform code. Here is what changed, the new MauiEnableAndroidWebViewDragDrop switch, and the MAUI1002 warning.

Upgrading a Blazor Web App whose pages live in a Razor class library or a .Client project from .NET 8 to .NET 10: what stays the same (both AdditionalAssemblies registrations), and the four things that break, from a 404 on blazor.web.js in thin hosts to NotFoundPage pages that render blank. Measured on ASP.NET Core 8.0.32 and 10.0.10.

Microsoft.AspNetCore.Components.AI is an experimental Blazor package in .NET 11 RC1 that turns any IChatClient into a streaming chat UI with tool approvals, typed tool rendering, and shared state over AG-UI.

Since the September 2026 .NET SDKs (10.0.112, 10.0.401, 11 RC1), dotnet watch rejects browser-refresh WebSockets from unknown origins. Set DOTNET_WATCH_AUTO_RELOAD_WS_ORIGINS to your host name.

On the .NET 10 SDK every Microsoft.NET.Sdk.Web project gets StaticWebAssetBasePath=/, so a web app referencing another web app collides. Set the base path on the referenced project. Disabling compression does not help.

A Blazor Web App page with [Authorize] becomes an endpoint the AuthorizationMiddleware checks, and a failed check calls ChallengeAsync, which needs AddAuthentication. Register a real scheme, or pass component endpoints through to AuthorizeRouteView.

Microsoft.Authentication.WebAssembly.Msal 10.0.8, 9.0.16 and 8.0.27 moved to msal.js 4, whose async init races itself. Initialize MSAL once in Program.cs, or pin 10.0.7.