--- title: "ASP.NET Core docs: What's new for April 1, 2021 - April 30, 2021" description: "What's new in the ASP.NET Core docs for April 1, 2021 - April 30, 2021." ms.date: 05/10/2021 --- # ASP.NET Core docs: What's new for April 1, 2021 - April 30, 2021 Welcome to what's new in the ASP.NET Core docs from April 1, 2021 through April 30, 2021. This article lists some of the major changes to docs during this period. ## Blazor ### Updated articles - - Blazor forms and validation UE pass - - Add docs on preventing rendering after event handling - - Blazor RCL topic UE pass ### New articles - - Add HttpLogging docs ### Updated articles - - Add SNI configuration docs ## gRPC Updated articles - - Add gRPC performance section about reading data - - Add troubleshooting section for gRPC calls and subdirectories ## MVC Updated articles - - App Model topic+sample update ## Security ### Updated articles - - FF trust cert ## Community contributors The following people contributed to the ASP.NET Core docs during this period. Thank you! Learn how to contribute by following the links under "Get involved" in the [what's new landing page](index.yml). - [fiyazbinhasan](https://github.com/fiyazbinhasan) - Fiyaz Bin Hasan (5) - [mrnustik](https://github.com/mrnustik) - Michal Mrnuštík (2) - [ahmadrasyidsalim](https://github.com/ahmadrasyidsalim) - Ahmad Rasyid Salim (1) - [amal-stack](https://github.com/amal-stack) - Amal Krishna (1) - [ankitvijay](https://github.com/ankitvijay) - Ankit Vijay (1) - [beppemarazzi](https://github.com/beppemarazzi) - Giuseppe Marazzi (1) - [daveabrock](https://github.com/daveabrock) - Dave Brock (1) - [FatTigerWang](https://github.com/FatTigerWang) - FatTiger (1) - [HannesSam](https://github.com/HannesSam) - Hannes Samskog (1) - [iamnicoj](https://github.com/iamnicoj) - Nico J (1) - [juliakm](https://github.com/juliakm) - Julia Kulla-Mader (1) - [meziantou](https://github.com/meziantou) - Gérald Barré (1) - [mizrael](https://github.com/mizrael) - David Guida (1) - [PascalSenn](https://github.com/PascalSenn) (1) - [serpent5](https://github.com/serpent5) - Kirk Larkin (1) - [stephtr](https://github.com/stephtr) - Stephan Troyer (1) - [WimObiwan](https://github.com/WimObiwan) - Wim Devos (1)