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This is a prerelease version of Microsoft .NET Framework 4.7.1 (Preview).

Microsoft .NET Framework 4.7.1 (Preview)


This package skips automatic verification:

Requires reboot due to KB2919355

This package is exempt from moderation. While it is likely safe for you, there is more risk involved.

This is an early access build of .NET Framework 4.7.1. The .NET Framework 4.7.1 is the next version of the .NET Framework. It is currently feature-complete and in the testing phase. Microsoft is asking for individuals and companies to help validate the quality and compatibility of the release. It is not ready for production and is not supported. The current build of the .NET Framework 4.7.1 being shared is build 2538.

You can see the full set of changes in the .NET Framework 4.7.1 in the change list on GitHub.

To install Microsoft .NET Framework 4.7.1 (Preview), run the following command from the command line or from PowerShell:

C:\> choco install dotnet4.7.1 --version 4.7.2538.0-preview1 --pre

To upgrade Microsoft .NET Framework 4.7.1 (Preview), run the following command from the command line or from PowerShell:

C:\> choco upgrade dotnet4.7.1 --version 4.7.2538.0-preview1 --pre


  • tools\ChocolateyInstall.ps1 Show
    $productNameWithVersion = 'Microsoft .NET Framework 4.7.1 (preview build 2538)'
    $release = 461290
    $packageName = 'dotnet4.7.1'
    $url = ''
    $checksum = '9894974956B55116C59269FBC3FE6CAFD62FC2E3242F5BB3154D5F4D4EB51D79'
    $checksumType = 'sha256'
    $arguments = @{
        packageName = $packageName
        silentArgs = "/Quiet /NoRestart /Log ""${Env:TEMP}\${packageName}.log"""
        validExitCodes = @(
            0, # success
            3010 # success, restart required
        url = $url
        checksum = $checksum
        checksumType = $checksumType
        url64 = $url
        checksum64 = $checksum
        checksumType64 = $checksumType
    function Test-Installed($Release)
        $props = Get-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full' -Name Release -ErrorAction SilentlyContinue
        return $props -ne $null -and $props.Release -ge $Release
    if (Test-Installed -Release $release) {
        Write-Host "$productNameWithVersion or later is already installed."
    Install-ChocolateyPackage @arguments
    Write-Host "A restart may be required to finalize $productNameWithVersion installation."

Virus Scan Results

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.


Package Maintainer(s)

Software Author(s)

  • Microsoft


Release Notes



4.7.2538.0-preview1: Initial package release.

Version History

Version Downloads Last updated Status
Microsoft .NET Framework 4.7.1 4.7.2558.0 312062 Thursday, October 19, 2017 approved
Microsoft .NET Framework 4.7.1 (Preview) 4.7.2538.0-preview1 266 Thursday, August 17, 2017 exempted

Discussion for the Microsoft .NET Framework 4.7.1 (Preview) Package

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  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
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  • Tell us what you love about the package or Microsoft .NET Framework 4.7.1 (Preview), or tell us what needs improvement.
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