Netfx3 windows server 2019 как включить

Установка .NET Framework 3.5 на Windows Server 2012/2016

Запустите службу «Центр обновления Windows»

Нажмите «Пуск» и выберите «Администрирование»:

В открывшемся окне перейдите в «Службы»:

Нажмите правой кнопкой мыши на службе «Центр обновления Windows» и выберите «Свойства»:

Установите тип запуска «Вручную» и нажмите «ОK»:

Запустите службу:

Установите .NET Framework 3.5

Нажмите «Пуск» и откройте «Диспетчер серверов»:

Нажмите «Управление» и выберите «Добавить роли и компоненты»:

Нажмите «Далее»:

«Далее»:

 «Далее»:

«Далее»:

«Далее»:

Поставьте галочку напротив компонента «Функции .NET Framework 3.5» и нажмите «Далее»:

Нажмите «Установить»:

Дождитесь завершения установки:

Можете закрыт окно, — .NET Framework 3.5 установлен. 

Установка .NET Framework 3.5 на Windows Server 2019

1. Скачайте архив с необходимыми компонентами sources.zip

2. Распакуйте файлы в корень диска С::

3. Запустите «Командную строку» от имени администратора:

4. Выполните команду с учётом пути к распакованным файлам из архива:
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:C:sxs

Таким образом компонент Microsoft .NET Framework 3.5 установлен.

Порядок установки будет следующим:

Запустите службу «Центр обновления Windows».

Нажмите «Пуск» и выберите «Администрирование».

В новом окне перейдите в «Службы».

Нажмите ПКМ на службе «Центр обновления Windows» и выберите «Свойства».

Дальше установите тип запуска «Вручную» и нажмите «ОK».

Установите службу.

Устанавливаем .NET Framework 3.5

Нажмите «Пуск» и откройте «Диспетчер серверов».

Дальше нажмите «Управление» и выберите «Добавить роли и компоненты».

Следуйте простой инструкции.

Нажмите «Далее».

Установите галочку напротив компонента «Функции .NET Framework 3.5» и нажмите «Далее».

Нажмите «Установить».

Дождитесь окончания установки.

Теперь можно закрыть окно.

Устанавливаем .NET Framework 3.5 на Windows Server 2019

Скачайте архив sources.zip с необходимыми компонентами.

Распакуйте файлы в корень диска С:.

Запустите «Командную строку» от имени администратора.

Выполните команду с учётом пути к распакованным файлам из архива:

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:C:sxs

Introduction

Oddly enough, this has been my most popular blog post in the past nine years I’ve been running this blog.

This blog post has been updated often and was initially written for Windows Server 2012, but it is still applicable today.
Interestingly, installing Dotnet 3.5 is the same as almost ten years ago.

The latest version of Microsoft .NET Framework 3.5 is .NET Framework 3.5 (3.5.1) Service Pack 1.

It is now possible to install .NET Framework 3.5 SP1 using the GUI, Powershell, DISM, or the Offline Installer.
Which method you prefer is up to preference.

Like most people having issues installing .NET Framework 3.5 on your server or client machine, read this blog post to clarify this question.

This blog post focuses on installing .NET Framework 3.5 on Windows Server 2012, Windows Server 2016, Windows Server 2019, and Windows 10.

Where do I find the .NET Framework 3.5 installation status?

If you want to verify if .NET Framework 3.5 has been installed on your client, the easiest way is to do this via the Control Panel.

Here is how to check if .NET 3.5 is installed on Windows 10:

Open the Control Panel and go to Programs and Features.

Press Turn Windows features or off.

Verify if .NET Framework 3.5 (Includes .NET 2.0 and 3.0) is enabled.

If you see the same as in the below screenshot, .NET Framework 3.5 is installed.

This blog post describes how to install .NET Framework 3.5 SP1 using:

1. Command-line (DISM)
2. Powershell
3. Server Manager (GUI)
4. Offline Installer

Unfortunately, installing Microsoft .NET Framework 3.5 is not as straightforward as you think. Microsoft has a guide for installing .NET Framework 3.5, but it does not provide the whole story.

.NET Framework 3.5 comes with the Windows 10 DVD and is located in the sourcessxs folder.

Versions of .NET Framework 3.5 on Windows 10

Note that when installing .NET Framework 3.5, they are version specific. You need to install .NET 3.5, which comes with each Windows 10 version. So, for Windows 10 2004, you will need to install .NET 3.5 from that media, 1909 from that media, and so on.

How to Install .NET 3.5 using DISM

Start an elevated command prompt using Run as Administrator and enter this command:

dism /online /enable-feature /featurename:NetFX3 /all /Source:d:sourcessxs /LimitAccess

Note: The source should be the Windows installation disc. In my case, the media was located on D:.

Powershell command to install .NET Framework 3.5

It is also possible to install .NET Framework 3.5 using Powershell.

Run Powershell with elevation and use this command to accomplish this:

Add-WindowsCapability –Online -Name NetFx3~~~~ –Source D:sourcessxs

Install .NET Framework 3.5 using the Server Manager

Go down to Specify an alternate source path and enter this in the path:

 <media drive>sourcessxs

Enter the source path, which should be the Windows 10 installation media.

Install .NET Framework 3.5 using the offline installer

You can also install .NET Framework 3.5 offline using the Offline Installer: https://www.microsoft.com/en-us/download/confirmation.aspx?id=25150.

Review installation of .NET Framework 3.5

Once you have followed one of the above three installation methods, verify the .NET Framework 3.5 Feature installation status using:

1. The GUI
2. Powershell

Review installation of .NET Framework 3.5 using the Server Manager

If you open Server Manager and open Add Roles and Features, see the following for the .NET Framework 3.5 installation:

Review installation of .NET Framework 3.5 using Powershell

Use the below Powershell command to see if .NET Framework 3.5 is installed and with which subversions:

(Get-ItemProperty -Path "HKLM:SOFTWAREMicrosoftNET Framework SetupNDPv3.5").Version

Conclusion

Incredibly, this is still an issue and my most popular blog post on this site.

The possibility to install .NET Framework 3.5 using Powershell is improved, but not much more.

Even though .NET Framework 3.5 is an old library, we will likely see it as a prerequisite in the upcoming years.

When did you first encounter this issue, and is it still applicable to you?

Please leave a comment below with your answer!

References

• Microsoft Docs – Install .NET Framework 3.5

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Most modern Windows apps require the .NET Framework to be installed. For example, NET Framework 4.8 is installed by default on Windows 11/10 and Windows Server 2022/2019. However, some old and legacy applications require the .NET Framework 3.5, 2.0, or even 1.0 to be installed.

In this article, we’ll walk you through how to install .NET 3.5 on Windows 11/10/8.1 and Windows Server 2022/2019/2016/2012R2.

Installing .NET Framework 3.5 on Windows 11 and 10

Check that .NET Framework 3.5 (includes .NET 2.0 and 3.0) is not installed on your computer. Open a PowerShell console as an administrator and run the command:

Get-WindowsCapability -Online -Name NetFx3

In our case, .NET 3.5 is not installed (State=NotPresent).

On Windows 10/11, you can install the .Net Framework from the Turn Windows Features on or off panel:

1. Run the command optionalfeatures.exe;
2. Select .NET Framework 3.5 (includes .NET 2.0 and 3.0) in the list of components, click OK;
3. If your computer has direct Internet access, select “Let Windows Update download the files for you”;
4. Windows will download and install the latest version of the .NET Framework 3.5 component from the Microsoft Update servers.

If your computer is not connected to the Internet or disconnected from the network, then an error will appear when installing .NET 3.5:

Windows couldn’t complete the requested changes.
The changes couldn’t be completed. Please reboot your computer and try again
Error code: 0x8024402C

In this case, you can manually install the NET 3.5 feature from your Windows installation media. To do this, you will need an installation USB flash drive or an ISO image file with your Windows version (how to check the version of Windows in an ISO image):

1. Connect your media with the Windows installation image to your computer. In my case, I have the file Windows 11 ISO image file. Click on the file and choose Mount to connect the image to a virtual DVD drive (or use the PowerShell command: Mount-DiskImage -ImagePath "C:ISOWindows11-22h2.iso" );
2. In my case, the virtual drive with the image was assigned the drive letter E: (we will use this drive letter in the following commands);
3. To install .Net 3.5 from the component source files on the installation disk, use the command:
   DISM /online /enable-feature /featurename:NetFX3 /All /Source:E:sourcessxs /LimitAccess
   Or (a similar PowerShell command):
   Add-WindowsCapability -Online -Name NetFx3~~~~ -Source E:SourcesSxS
   

To make sure that the .NET Framework is successfully installed, run the command:

Get-WindowsCapability -Online -Name NetFx3~~~~

Name         : NetFX3~~~~
State        : Installed
DisplayName  : .NET Framework 3.5 (includes .NET 2.0 and 3.0)
Description  : .NET Framework 3.5 (includes .NET 2.0 and 3.0)
DownloadSize : 72822163
InstallSize  : 496836410

List the versions of the .NET Framework that are installed on your computer:

Get-ChildItem 'HKLM:SOFTWAREMicrosoftNET Framework SetupNDP' -Recurse | Get-ItemProperty -Name version -EA 0 | Where { $_.PSChildName -Match ‘^(?!S)p{L}’} | Select PSChildName, version

How to Install .NET Framework 3.5 on Windows Server 2022/2019/2016?

On Windows Server 2022, 2019, 2016, and 2012 R2, you can install NET Framework 3.5 in several ways:

• Via Server Manager: Add roles and features -> Features -> .NET Framework 3.5 Features -> .NET Framework 3.5 (includes .NET 2.0 and 3.0 );
• Using DISM: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All
• With PowerShell: Install-WindowsFeature NET-Framework-Core

In this case, all the necessary .NET 3.5 installation files for your Windows Server version will be downloaded from the Windows Update servers. For this installation method to work, you need to check the following:

1. Your Windows Server must have direct Internet access. Proxy and firewall settings should not restrict access to Windows Update servers;
2. Your host must not be configured to receive updates from the local WSUS server. Check your current Windows Update settings using the Group Policy result report (rsop.msc) or directly in the registry;

   Check the value of the UseWUServer parameter in the registry:
   Get-ItemProperty -Path "HKLM:SOFTWAREPoliciesMicrosoftWindowsWindowsUpdateAU" -Name "UseWUServer" | select -ExpandProperty UseWUServer
   If the parameter value is 1, then your host is configured to receive Windows updates from the local WSUS server. In this case, you will receive error 0x800F0954 when installing .NET 3.5. Change the registry parameter to 0 or remove it to connect directly to the Microsoft Windows Update servers.

If you can access the Internet from your Windows Server host, but it is configured to receive updates from WSUS, you will see error 0x800f081f when installing NET Framework.

Solution: Install .Net 3.5 online from Microsoft servers and ignore local WSUS:

1. Export the current Windows Update settings from the HKLMSoftwarePoliciesMicrosoftWindowsWindowsUpdate registry key to a REG file:
   reg export HKLMSoftwarePoliciesMicrosoftWindowsWindowsUpdate c:WindowsUpdateRegFile.reg
2. Delete this key ( Remove-Item -Path HKLM:SoftwarePoliciesMicrosoftWindowsWindowsUpdate -Recurse ) and restart the service: net stop wuauserv & net start wuauserv
3. Run the .Net 3.5 installation from the web: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All
4. After the installation is complete, return the previous WU settings: import the reg file ( Reg import c:WindowsUpdateRegFile.reg ) and restart the Windows Update service again

If there is no direct Internet access from the server, then when you try to install .NET 3.5 on Windows Server through the Server Manager, you will receive the error 0x800F081F (The source files could not be found), 0x800F0950, 0x8024402c, 0x800F0906, or 0x800F0907 (depending on the version of Windows Server).

Although .NET Framework 3.5 is listed as a feature of Windows Server 2022/2019/2016/2012R2, its binary files are missing from the Windows component store (Features on Demand concept). This is done to reduce the size of the operating system image on the disk. You can check if the .NET Framework 3.5 source files are available in the local component store of Windows Server with the command:

Get-WindowsFeature *Framework*

As you can see the status of the NET-Framework-Core feature is Removed.

In order to install the NET-Framework-Core, you will need a distribution with your version of Windows Server in the form of an ISO file, or in the extracted form in a network folder. Mount the ISO file with the Windows Server install image as a virtual drive (for example, drive D:). Now, you can install the Windows features from the GUI or using PowerShell.

You can install the .Net 3.5 feature from the Server Manager graphical console:

1. Select the .Net Framework 3.5 feature as earlier, but prior to clicking Install, click a small link Specify an alternate source path at the bottom of the form;
2. Specify the path to the Component Store (SXS) folder in your Windows Server distro. If you mounted the ISO image as a virtual disk, the path may look like D:sourcessxs. It can also be a network share, where you copied the distribution files (for example, \fs1isows2016sourcessxs). Then click OK.

It is much easier to install .NET Framework 3.5 feature from the elevated command prompt or PowerShell console. Just run the command:

Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source:D:sourcessxs /LimitAccess

If you want to install the Windows Server feature using PowerShell, use the Add-WindowsFeature command:

Add-WindowsFeature NET-Framework-Core -Source d:sourcessxs

After the component installation is completed, a server restart is not required.

You can also manually copy 2 CAB files microsoft-windows-netfx3... from the sourcessxs folder of your Windows Server install image. In this case, to install .NET 3.5, just run the command:

dism /online /Add-Package /PackagePath:C:distribnet35microsoft-windows-netfx3-ondemand-package~31bf3856ad364e35~amd64~~.cab.

Configure .Net Framework Offline Installation Options with GPO

You can configure specific settings for installing Windows components from a local source or Windows Update even when using WSUS with the Group Policy option Specify settings for optional component installation and component repair (located under GPO section Computer Configuration -> Administrative Templates -> System).

On a standalone computer, you can enable this policy setting using the Local Group Policy Editor (gpedit.msc). In an Active Directory environment, you can create a GPO for all computers/servers using the GPMC console (gpmc.msc).

Here you can specify that when installing or repairing Windows components, you should always download files from the Windows Update servers (Internet) instead of the local WSUS server (the “Download repair content and optional features directly from Windows Update instead of Windows Server Update Services” option).

You can also specify the path to the shared folder with Windows Server components that you want to use for offline installation in the “Alternate source file path” parameter:

• Specify the path to network shared folder in the UNC format (\fs01distrws22sxs) (here you can specify multiple UNC paths separated by semicolons: \fs01ws22sxs;\man02ws22sxs;\fs03sxs)
• It is also possible to specify a WIM file as a source: WIM:\fso1distrws16install.wim:2 (in this case, 2 is the index of your edition of Windows Server’s image in the WIM file. You can list available Windows Server edition in a WIM file with a command: DISM /Get-WimInfo /WimFile:"\serverdistrws2016install.wim" )

Use the different SXS sources for different versions of Windows Server. If you are running multiple versions of Windows Server on your network, you will need to create separate GPOs with different UNC paths to SXS sources. You can use Group Policy WMI filters to apply a GPO only to hosts that are running specific versions of Windows Server.