Announcing .NET Framework 4.8 Early Access Build 3745

Namrata Karnam

As we get closer to the final version, our efforts are focused on stabilizing the release over the coming weeks. Please keep up the support by trying out our latest preview 3745 and provide any feedback you may have for the build or for .NET 4.8 overall, via the .NET Framework Early Access GitHub repository.

Supported Windows Client versions: Windows 10 version 1809, Windows 10 version 1803, Windows 10 version 1709, Windows 10 version 1703, Windows 10 version 1607, Windows 8.1, Windows 7 SP1

Supported Windows Server versions: Windows Server 2019, Windows Server version 1803, Windows Server version 1709, Windows Server 2016, Windows Server 2012, Windows Server 2012 R2, Windows Server 2008 R2 SP1

This build includes an updated .NET 4.8 runtime as well as the .NET 4.8 Developer Pack (a single package that bundles the .NET Framework 4.8 runtime, the .NET 4.8 Targeting Pack and the .NET Framework 4.8 SDK). Please note: this build is not supported for production use.

Next steps: To explore the new build, download the .NET 4.8 Developer Pack. Instead, if you want to try just the .NET 4.8 runtime, you can download either of these:

You can checkout the fixes included in this preview build or if you would like to see the complete list of improvements in 4.8 so far, please go here.

This preview build is also included in the next update for Windows 10. You can sign up for Windows Insiders to validate that your applications work great on the latest .NET Framework included in the latest Windows 10 releases.



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  • Catalin Pop 0

    Oh my god! What happened to the blogs? This looks like a Word document! … Oh, Microsoft you really clueless when it comes to any kind of design! I can’t even read this on UHD it hurts my eyes!
    Please STOP!

    • Michael Tyson 0

      Huh? I think the new design looks nice and clean.

  • Whitehouse, Edgar 0

    Why does this blog post say “Please note: this build is not supported for production use.”  and also “This preview build is also included in the next update for Windows 10.“?
    Either it is production ready or it isn’t. Which one?

    • Dave Bacher 0

      I believe – based on the Windows Insider statement in the next sentence – that the intent was “next Windows Feature Update,” or 19H1.  The sentence after that references Windows Insider, which is on 19H1 right now.
      Also – since when has something not being production ready stopped Microsoft from pushing it as a mandatory update?

  • Tom Austin 0

    Where can we find details about the bugs fixed? 410007 is listed for the WPF ItemsControl automation issue but how do we see the details for that?

  • Benjamin Wiens 0

    When will the final version be available? Can you name a date?

  • Pierre Festas 0

    Will the Final Release of this Framework 4.8 be included in the Windows 10 19H1 release in May 2019, or will it be an optional Windows 10 update ?

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