.NET Blog

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Announcing the .NET Framework 4.6.2 Preview

Updated (2017): See .NET Framework Releases to learn about newer releases. This release is not supported. We are pleased to announce the .NET Framework Preview 4.6.2. You can download the release from one of the following links: We've added new features and APIs in the following areas of the product: You can see the...

Porting to .NET Core

.NET Core is getting closer and closer to an RTM release. Only two months ago, we announced the RC release of .NET Core and ASP.NET Core. As part of our validation, we're working with internal as well as external customers to port their code to .NET Core. We received many requests from you asking us how you should go about migrating ...

Porting to .NET Core

.NET Core is getting closer and closer to an RTM release. Only two months ago, we announced the RC release of .NET Core and ASP.NET Core. As part of our validation, we're working with internal as well as external customers to port their code to .NET Core. We received many requests from you asking us how you should go about migrating existing ...

Porting to .NET Core

.NET Core is getting closer and closer to an RTM release. Only two months ago, we announced the RC release of .NET Core and ASP.NET Core. As part of our validation, we're working with internal as well as external customers to port their code to .NET Core. We received many requests from you asking us how you should go about migrating existing ...

Support Ending for the .NET Framework 4, 4.5 and 4.5.1

Updated (2017): See .NET Framework Releases to learn about newer releases. As previously announced, starting January 12, 2016 Microsoft will no longer provide security updates, technical support or hotfixes for .NET 4, 4.5, and 4.5.1 frameworks. All other framework versions, including 3.5, 4.5.2, 4.6 and 4.6.1, will be supported for the ...

.NET Framework 4.6.1 is now available!

Updated (2017): See .NET Framework Releases to learn about newer releases. Updated (1/2016): This post was updated to add information about reference source for .NET Framework 4.6.1. Today we are announcing the availability of  .NET Framework 4.6.1. You can download this release now. Here is a summary of key improvements ...

August 2015 .NET Security Updates

The .NET team released two security bulletins today as part of the monthly "Update Tuesday" cycle. Microsoft Security Bulletin MS15-080 - Critical, Vulnerability in .NET Framework Could Allow Remote Code Execution (3078662) This security update resolves vulnerabilities in Microsoft .NET Framework. The most severe of the ...

RyuJIT Bug Advisory in the .NET Framework 4.6

A code generation (AKA "codegen") issue in RyuJIT in the .NET Framework 4.6 has been discovered that affects a calling pattern called Tail Call Optimization. The RyuJIT team has fixed the issue and has started the process of producing a .NET Framework 4.6 patch that will be freely available for anyone to download and install. There is a ...

May 2015 .NET Security Updates

The .NET team released two security bulletins today as part of the monthly "Update Tuesday" cycle. Microsoft Security Bulletin MS15-044 - Critical, Vulnerability in .NET Framework Could Allow Remote Code Execution (3057110) This security update resolves vulnerabilities in Microsoft .NET Framework. The most severe of the ...