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Go to notfoundHow to resolve error code 0x800f0831: Installing .NET Framework 3.5 on Windows Server 2016
Follow these steps to resolve the error code 0x800f0831 encountered when installing .NET Framework 3.5 on Windows Server 2016:
- Verify the installation of .NET Framework 3.5: Access the Control Panel and navigate to Programs and Features. Check for Microsoft .NET Framework 3.5 to see if it is already installed. If it is present, there's no need to reinstall it.
- Utilise the DISM command: Launch Command Prompt as an administrator and enter the following command: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs. Substitute 'D:' with the appropriate drive letter for your Windows Server 2016 installation media. This will install .NET Framework 3.5 directly from the media.
- Employ the Windows Server 2016 installation media: Insert the installation media and open File Explorer. Navigate to the Sources folder to locate the 'sxs' file. Copy this file to your desktop or another directory on your server. Open Command Prompt as an administrator and execute the command: Dism /online /enable-feature /featurename:NetFx3 /All /LimitAccess /Source:C:\sxs. Replace 'C:' with the drive letter of the location where the 'sxs' file is saved.
- Ensure Windows updates are current: Verify that your Windows Server 2016 is updated with the latest patches. Access Settings > Update & Security > Windows Update and search for updates. Install any pending updates and attempt to install .NET Framework 3.5 once more.
- Temporarily disable antivirus software: Occasionally, antivirus programs may obstruct the installation of .NET Framework 3.5. Try turning off your antivirus software temporarily, then proceed with the installation of .NET Framework 3.5.