H3: From a Third-Party Website H2: How to Install the Offline Installer H3: On Windows 11, 10, 8.1, and 8 H3: On Windows 7 and Earlier Versions H2: How to Troubleshoot the Installation Issues H3: Common Error Codes and Their Solutions H3: Using Windows Installation Media or DISM Tool H2: Conclusion H2: FAQs Table 2: Article with HTML formatting How to Download .NET Framework 3.5 Offline Installer
If you want to run some applications that require .NET Framework 3.5 on your Windows computer, you may need to download and install it manually. However, if you don't have an Internet connection or you want to save bandwidth and time, you can use an offline installer instead. In this article, we will show you how to download .NET Framework 3.5 offline installer from different sources and how to install it on your system. We will also provide some tips on how to troubleshoot the installation issues if you encounter any.
What is .NET Framework 3.5 and Why Do You Need It?
.NET Framework is a software framework developed by Microsoft that provides a platform for running and developing applications. It consists of various components, such as libraries, runtime, compilers, and tools. Different versions of .NET Framework have different features and compatibility with different operating systems and applications.
download .net framework 3.5 (includes .net 2.0 and 3.0) offline installer
.NET Framework 3.5 is one of the older versions of .NET Framework that was released in 2007. It includes .NET Framework 2.0 and 3.0 as well as some new features, such as Language Integrated Query (LINQ), Windows Communication Foundation (WCF), Windows Presentation Foundation (WPF), and Windows Workflow Foundation (WF).
You may need .NET Framework 3.5 to run some applications that were developed using this version or earlier versions of .NET Framework. For example, some games, software, or drivers may require .NET Framework 3.5 to function properly. If you don't have .NET Framework 3.5 installed on your system, you may see a pop-up message asking you to install it when you try to run such applications.
How to Download the Offline Installer
An offline installer is a file that contains all the necessary components for installing a software without requiring an Internet connection. You can download the offline installer for .NET Framework 3.5 from two sources: Microsoft's official website or a third-party website.
From Microsoft's Official Website
The easiest and safest way to download the offline installer for .NET Framework 3.5 is from Microsoft's official website. Here are the steps:
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Go to and scroll down to the section "Download the offline installer".
Click on the link to go to the download page.
Select your preferred language from the drop-down menu and click on the "Download" button.
Save the file "dotnetfx35.exe" (about 231 MB) to your computer.
From a Third-Party Website
If you can't access Microsoft's official website or you want to download a smaller file size, you can also download the offline installer for .NET Framework 3.5 from a third-party website. However, you should be careful about the source and the file integrity, as some websites may contain malware or corrupted files.
One of the reliable third-party websites that offer the offline installer for .NET Framework 3.5 is . Here are the steps:
Go to and click on the "Download" button.
Save the file "dotnetfx35setup.exe" (about 3 MB) to your computer.
Run the file and follow the instructions to download and install .NET Framework 3.5 (about 200 MB).
How to Install the Offline Installer
Once you have downloaded the offline installer for .NET Framework 3.5, you can install it on your system by following these steps:
On Windows 11, 10, 8.1, and 8
Double-click on the offline installer file (dotnetfx35.exe or dotnetfx35setup.exe) to start the installation process.
Accept the license agreement and click on "Install".
Wait for the installation to complete. You may need to restart your computer after the installation.
On Windows 7 and Earlier Versions
Double-click on the offline installer file (dotnetfx35.exe or dotnetfx35setup.exe) to start the installation process.
Accept the license agreement and click on "Next".
Select the features you want to install and click on "Next".
Wait for the installation to complete. You may need to restart your computer after the installation.
How to Troubleshoot the Installation Issues
Sometimes, you may encounter some issues when installing .NET Framework 3.5 offline installer on your system. Here are some common error codes and their solutions:
Common Error Codes and Their Solutions
Error CodeDescriptionSolution
0x800F0906The source files could not be downloaded.Make sure you have an Internet connection and try again. Alternatively, use a different source file or download location.
0x800F081FThe source files could not be found.Make sure you have the correct offline installer file and try again. Alternatively, use a different source file or download location.
0x800F0907The Group Policy on your system prevents the installation.Contact your system administrator or change the Group Policy settings to allow the installation.
0x80070002The system cannot find the file specified.Make sure you have the correct offline installer file and try again. Alternatively, use a different source file or download location.
0x800736B3The referenced assembly is not installed on your system.Make sure you have all the required components and dependencies for .NET Framework 3.5 installed on your system and try again.
Using Windows Installation Media or DISM Tool
If none of the above solutions work, you can try using Windows installation media or Deployment Image Servicing and Management (DISM) tool to install .NET Framework 3.5 offline installer on your system. Here are the steps:
Insert your Windows installation media (DVD or USB) into your computer or mount an ISO image of Windows.
Open Command Prompt as administrator by pressing Windows + X keys and selecting "Command Prompt (Admin)" from the menu.
Type the following command and press Enter:Dism /online /enable-feature /featurename:NetFx3 /All /Source::\sources\sxs /LimitAccessReplace with the letter of your Windows installation media or ISO image.
Wait for the command to complete. You may need to restart your computer after the installation.
Conclusion
In this article, we have shown you how to download .NET Framework 3.5 offline installer from different sources and how to install it on your system. We have also provided some tips on how to troubleshoot the installation issues if you encounter any. We hope this article has been helpful for you and you can now run your applications that require .NET Framework 3.5 without any problems.
FAQs
What is the difference between .NET Framework 3.5 offline installer and online installer?An offline installer is a file that contains all the necessary components for installing a software without requiring an Internet connection. An online installer is a file that downloads the necessary components from the Internet during the installation process. An offline installer is useful when you don't have an Internet connection or you want to save bandwidth and time.
How can I check if .NET Framework 3.5 is already installed on my system?You can check if .NET Framework 3.5 is already installed on your system by following these steps:
Press Windows + R keys to open the Run dialog box.
Type "regedit" and press Enter to open the Registry Editor.
Navigate to the following key:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5
Look for a value named "Install" with a data of 1. If you see it, it means .NET Framework 3.5 is installed on your system. If you don't see it, it means .NET Framework 3.5 is not installed on your system.
Can I install .NET Framework 3.5 on Windows XP?Yes, you can install .NET Framework 3.5 on Windows XP, but you need to have Service Pack 2 or later installed on your system. You can download the offline installer for .NET Framework 3.5 from Microsoft's official website or a third-party website and follow the installation steps for Windows 7 and earlier versions.
Can I uninstall .NET Framework 3.5 from my system?Yes, you can uninstall .NET Framework 3.5 from your system, but you should be careful as some applications may depend on it and stop working properly. You can uninstall .NET Framework 3.5 from your system by following these steps:
Press Windows + X keys and select "Control Panel" from the menu.
Click on "Programs and Features" or "Uninstall a program".
Find and select ".NET Framework 3.5" from the list of programs and click on "Uninstall/Change".
Follow the instructions to complete the uninstallation process.
Where can I find more information about .NET Framework 3.5?You can find more information about .NET Framework 3.5 from the following sources:
: This page provides an overview of the new features and improvements in .NET Framework 3.5.
: This page provides a guide for developers who want to install, configure, and use .NET Framework 3.5 on their development machines.
: This page provides troubleshooting tips for common issues that may occur when installing or uninstalling .NET Framework 3.5.
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