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.NET Aspire 9.3 is here and enhanced with GitHub Copilot!
May 19, 2025
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.NET Aspire 9.3 is here and enhanced with GitHub Copilot!

Jeffrey T. Fritz
Jeffrey T. Fritz

.NET Aspire 9.3 is the biggest release of .NET Aspire yet, with the introduction of GitHub Copilot directly into the .NET Aspire Dashboard, updates for integrat...

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Latest posts

Announcing .NET Core 3.0 Preview 8
Aug 13, 2019
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Announcing .NET Core 3.0 Preview 8

Rich Lander [MSFT]
Rich Lander [MSFT]

Today, we are announcing .NET Core 3.0 Preview 8. Just like with Preview 7, we've focused on polishing .NET Core 3.0 for a final release and are not adding new features. If these final previews seem anti-climatic, that's by design. Download .NET Core 3.0 Preview 8 right now on Windows, macOS and Linux. ASP.NET Core and EF Core are also releasing updates today. Details: The Microsoft .NET Site has been updated to .NET Core 3.0 Preview 8 (see the .NET Core runtime version in the footer text). It's been running successfully on Preview 8 for over two weeks, on Azure WebApps (as a self-contai...

Announcing Entity Framework Core 3.0 Preview 8 and Entity Framework 6.3 Preview 8
Aug 13, 2019
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Announcing Entity Framework Core 3.0 Preview 8 and Entity Framework 6.3 Preview 8

Diego Vega
Diego Vega

The Preview 8 versions of the EF Core 3.0 package and the EF 6.3 package are now available for download from nuget.org. New previews of .NET Core 3.0 and ASP.NET Core 3.0 are also available today. Please install these previews to validate that all the functionality required by your applications is available and works correctly.  Please report any issues you find as soon as possible to either the EF Core issue tracker or the EF 6 issue tracker on GitHub. At this point, we are especially interested in hearing about any unexpected issues blocking you from upgrading to the new releases, but you are also w...

ASP.NET Core and Blazor updates in .NET Core 3.0 Preview 8
Aug 13, 2019
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ASP.NET Core and Blazor updates in .NET Core 3.0 Preview 8

Sourabh Shirhatti [MSFT]
Sourabh Shirhatti [MSFT]

.NET Core 3.0 Preview 8 is now available and it includes a bunch of new updates to ASP.NET Core and Blazor. Check out the great new features and improvements in this release!

Azure SignalR Service now supports Event Grid!
Aug 8, 2019
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Azure SignalR Service now supports Event Grid!

Ken Chen
Ken Chen

We just released a new feature which enables Azure SignalR Service to publish connection events to Azure Event Grid. Check out this blog post to learn how it works and how to use it.

Update on .NET Standard adoption
Aug 7, 2019
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Update on .NET Standard adoption

Immo Landwerth
Immo Landwerth

It's about two years ago that I announced .NET Standard 2.0. Since then we've been working hard to increase the set of .NET Standard-based libraries for .NET. This includes many of the BCL components, such as the Windows Compatibility Pack, but also other popular libraries, such as the JSON.NET, the Azure SDK, or the AWS SDK. In this blog post, I'll share some thoughts and numbers about the .NET ecosystem and .NET Standard. Adoption by the numbers In order to track adoption, we're looking at nuget.org. On a regular interval, we check whether new package versions add support for .NET Standard. Once a package ID ...

Calling all .NET desktop and mobile developers!
Aug 7, 2019
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Calling all .NET desktop and mobile developers!

Olia Gavrysh
Olia Gavrysh

We would love to hear about your experience with building client applications in .NET. Your feedback will greatly help us to improve the .NET tooling and ensure our roadmap focuses on your needs. Participate in shaping the future of the .NET client development by taking this short survey (5 minutes to complete). We are also searching for developers to discuss new concepts and prototypes, so tell us in the survey if you would like .NET engineering team to reach out to you about upcoming opportunities in .NET UI development. Take survey! We really appreciate your input and will build our decision on th...

Try out Nullable Reference Types
Aug 6, 2019
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Try out Nullable Reference Types

Phillip Carter
Phillip Carter

Try out Nullable Reference Types With the release of .NET Core 3.0 Preview 7, C# 8.0 is considered "feature complete". That means that the biggest feature of them all, Nullable Reference Types, is also locked down behavior-wise for the .NET Core release. It will continue to improve after C# 8.0, but it is now considered stable with the rest of C# 8.0. At this time, our aim is to collect as much feedback about the process of adopting nullability as possible, catch any issues, and collect feedback on further improvements to the feature that we can do after .NET Core 3.0. This is one of the largest featu...

Improving .NET Core installation in Visual Studio and on Windows
Aug 5, 2019
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Improving .NET Core installation in Visual Studio and on Windows

Lee Coward
Lee Coward

Visual Studio 2019 version 16.3 and .NET Core 3.0 Preview 7 improve the installation experience of .NET Core on Windows. The goal is to reduce the number of .NET Core versions that might be on a machine. The improvements are based on customer feedback and our own experiences as well as laying the groundwork for future improvements. .NET Core SDK installer for Windows Let's start with the .NET Core SDK installer. Install now removes previous versions Starting with .NET Core 3.0 Preview 7, the .NET Core SDK installer will remove previous patch versions after a successful installation. This means that if you hav...

HttpRepl: A command-line tool for interacting with RESTful HTTP services
Jul 31, 2019
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HttpRepl: A command-line tool for interacting with RESTful HTTP services

Angelos Petropoulos
Angelos Petropoulos

The ASP.NET team has built a command-line tool called HttpRepl. It lets you browse and invoke HTTP services in a similar way to working with files and folders. You give it a starting point (a base URL) and then you can execute commands like “dir” and “cd” to navigate your way around the API: Once you have identified the API you are interested in, you can use all the typical HTTP verbs against it. Here is an example of calling GET on http://localhost:65369/People as a continuation from before: Right now HttpRepl is being shipped as a .NET Core Global Tool, which means all you have to do to get it is run the ...