Announcing .NET Framework 4.8 Early Access build 3621!

Preeti Krishna

June 6th, 2018

Today, we are happy to share the .NET Framework 4.8 Early Access build 3621 for your feedback. This is one of the in-development builds of the next version of the .NET Framework. The changes in this build have been functionally validated by the .NET teams. We would love your help to ensure this is a high quality and compatible release. This build is not supported for production use.

Next steps:

This pre-release build 3621 includes improvements in several areas. This includes accessibility improvements in Winforms and WPF areas as well. You can see the complete list of improvements in this build in the release notes.

The .NET Framework build 3621 will replace any existing .NET Framework 4 and later installation on your machine. This means all .NET Framework 4 and later applications on your machine will run on the .NET Framework early access builds upon installation.

The .NET Framework build 3621 installs on the following Windows and Windows Server versions:

Windows 10 April 2018 Update

Windows 10 Fall Creators Update

Windows 10 Creators Update

Windows 10 Anniversary Update

Windows Server, version 1709

Windows Server 2016

We will continue sharing early builds of the next release of the .NET Framework via the Early Access Program on a regular basis for your feedback. As a member of the .NET Framework Early Access community you will have an active role in helping us build new .NET Framework products. We will do our best to ensure these early access builds are stable and compatible, but you may see bugs or issues from time to time. We’d appreciate you taking the time to report these to us on Github so we can address these issues before the official release. Thank you.