.NET Blog

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RyuJIT Just-in-Time Compiler Optimization Enhancements

I'd like to tell you about some of the recent changes we've made as part of our ongoing work to extend the optimization capabilities of RyuJIT, the MSIL-to-native code generator used by .NET Core and .NET Framework. I hope it will make for an interesting read, and offer some insight into the sorts of optimization opportunities we have our ...

.NET Framework October 2017 Security and Quality Rollup

Today, we are releasing the October 2017 Security and Quality Rollup. The update applies to all supported Windows versions. It includes a known issue for Windows 10 1507 (see below). Security This release contains no new security updates. Quality and Reliability This release contains the following quality and reliability improvements. WPF...

Announcing UWP Support for .NET Standard 2.0

This post was mostly written by Rich Lander with contributions from Immo Landwerth. Today, we are releasing huge updates to UWP for .NET developers. The really big improvement is adding support for .NET Standard 2.0. UWP developers now have access to ~ 20k more APIs. This release brings UWP to partity with the other .NET implementations that...

Announcing SignalR for ASP.NET Core Alpha 2

A few weeks ago we released the alpha1 version of SignalR for ASP.NET Core 2.0. Today we are pleased to announce a release of the alpha2 version of SignalR for ASP.NET Core 2.0. This release contains a number of changes (including API changes) and improvements. Notable Changes Release notes can be found on github. API Changes ...

.NET Framework 4.7.1 Runtime and Compiler Features

This post describes the new Runtime, Compiler and Base Class Library (BCL) improvements in the .NET Framework 4.7.1. You can try out these features by downloading the Developer Pack, described in the Welcome to the .NET Framework 4.7.1 Early Access blog post.  BCL - .NET Standard 2.0 Support .NET Framework 4.7.1 has built-in support ...

Build a web service with F# and .NET Core 2.0

Earlier this year, I wrote about an update to the roadmap for F# and .NET Core. I had mentioned that there were a number of things you could build with F# and .NET Core today, such as web services. In this post, I'll walk through building a web service with F# and .NET Core 2.0 using the Giraffe library. It's also worth noting that Giraffe ...

.NET Framework September 2017 Preview of Quality Rollup

Today, we are releasing the September 2017 Preview of Quality Rollup. This type of rollup is intended for businesses that want to the preview or use quality improvements as soon as they are available. This update applies to Windows 10 Update 1607 (Anniversary Update) and to Windows Server 2016. FYI: The KBs for Windows Server 2016 have been...

.NET Core September 2017 Update — macOS High Sierra Support

We released .NET Core updates for macOS High Sierra Support and additional quality fixes. You can download and install the update for Windows, macOS and Linux. This update is for .NET Core 1.0 and 1.1. The initial .NET Core 2.0 release includes similar improvements, so is not being updated with this release. Downloads Note: The .NET...

.NET Framework 4.7.1 Accessibility and WPF Improvements

This post describes the new WPF and accessibility features and improvements in .NET Framework 4.7.1. You can try out these features by downloading the Developer Pack, described in the Welcome to the .NET Framework 4.7.1 Early Access blog post. Accessibility improvements .NET Framework 4.7.1 brings in a lot of accessibility improvements ...

Watch .NET Conf 2017!

.NET Conf starts today. It's a three-day, free, virtual and global .NET conference. All you need to do is point your web browser to channel9.msdn.com, starting at 8AM Pacific Time. We have a packed agenda with a great set of expert .NET developers. What will you learn? Many things. You will learn to build for web, mobile, desktop, games, ...