Download .NET Framework 3.5 SP1 Web Installer for Windows 10 64-bit
How to Download and Install .NET Framework 3.5 on Windows 10 64-bit
If you are trying to run an application that requires .NET Framework 3.5 on your Windows 10 64-bit system, you may encounter a pop-up message that asks you to install this feature. However, you may not be able to install it through Windows Update or Control Panel, especially if you have a poor or limited internet connection. In this article, we will show you how to download and install .NET Framework 3.5 offline installer, as well as some troubleshooting tips for common installation errors.
What is .NET Framework 3.5 and Why Do You Need It?
.NET Framework is a software development framework created by Microsoft that provides an environment for running applications. It consists of various components, such as libraries, languages, tools, and runtime engines. Different versions of .NET Framework have different features and functionalities, and some applications may target a specific version.
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Features and Benefits of .NET Framework 3.5
.NET Framework 3.5 is a full cumulative update that contains many new features building incrementally upon .NET Framework 2.0, 3.0, and includes cumulative servicing updates to the dependent subcomponents. Some of the new features of .NET Framework 3.5 include:
LINQ: A set of extensions to the .NET languages that enable data querying capabilities.
Expression trees: A data structure that represents lambda expressions and queries in a tree-like format.
Improved ASP.NET support for AJAX development: A framework that enables creating rich web applications with minimal code.
HashSet collections: A collection class that represents a set of unique elements.
DateTimeOffset: A structure that represents a point in time with an offset from Coordinated Universal Time (UTC).
WCF and WF integration: A feature that enables seamless communication and workflow between Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF) services.
ASP.NET Dynamic Data: A framework that enables rapid data-driven development without writing code.
Core improvements to the common language runtime: A component that provides core services such as memory management, thread management, security, and exception handling.
Performance improvements to Windows Presentation Foundation: A framework that provides a unified way of creating graphical user interfaces for Windows applications.
Ability of ClickOnce application publishers to opt out of signing and hashing: A feature that allows publishers to reduce the size and improve the performance of their ClickOnce applications.
Drawbacks and Limitations of .NET Framework 3.5
Despite its many advantages, .NET Framework 3.5 also has some drawbacks and limitations, such as:
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Compatibility issues: Some applications may not be compatible with .NET Framework 3.5, especially if they are designed for newer versions of .NET Framework. You may need to install multiple versions of .NET Framework on your system to run different applications.
Security risks: .NET Framework 3.5 may contain some vulnerabilities that have been fixed in later versions of .NET Framework. You may need to apply security patches and updates regularly to keep your system safe.
Performance overhead: .NET Framework 3.5 may consume more system resources than newer versions of .NET Framework, such as memory, disk space, and CPU cycles. You may experience slower performance or reduced battery life on your device.
How to Download .NET Framework 3.5 Offline Installer
If you want to install .NET Framework 3.5 on your Windows 10 64-bit system without an internet connection, you can use the offline installer. The offline installer is a standalone file that contains all the components of .NET Framework 3.5 and does not require any additional downloads. Here are the steps to download the offline installer:
Step 1: Visit the Official Microsoft Download Center
Go to the .
Step 2: Select Your Language and Click Download
On the download page, you will see a list of languages that are supported by .NET Framework 3.5. Choose the language that matches your system language or your preference, and then click the "Download" button.
Step 3: Save the File to Your Desired Location
You will be prompted to save the file to your computer. The file name is "dotnetfx35.exe" and the file size is about 231 MB. Choose a location where you want to save the file, such as your desktop or a USB drive, and then click "Save".
How to Install .NET Framework 3.5 on Windows 10 64-bit
Once you have downloaded the offline installer, you can install .NET Framework 3.5 on your Windows 10 64-bit system by following these steps:
Step 1: Run the Offline Installer as Administrator
Navigate to the location where you saved the offline installer file and double-click on it. You may see a User Account Control (UAC) dialog box asking for your permission to run the file. Click "Yes" to continue. Alternatively, you can right-click on the file and choose "Run as administrator" from the context menu.
Step 2: Follow the On-Screen Instructions to Complete the Installation
You will see a welcome screen that shows the license terms and conditions for using .NET Framework 3.5. Read them carefully and click "I have read and accept the license terms" if you agree with them. Then, click "Install" to start the installation process.
The installation may take several minutes depending on your system configuration and speed. You will see a progress bar that shows the status of the installation. Do not close or interrupt the installation window until it is finished.
Step 3: Restart Your Computer if Prompted
After the installation is completed, you may see a message that asks you to restart your computer to apply the changes. Click "Restart Now" to reboot your system, or click "Restart Later" if you want to restart it manually later.
How to Troubleshoot .NET Framework 3.5 Installation Errors
Sometimes, you may encounter some errors or problems when installing .NET Framework 3.5 on your Windows 10 64-bit system. These errors may be caused by various factors, such as corrupted files, incompatible settings, missing components, or network issues. Here are some methods that you can try to troubleshoot and fix these errors:
Method 1: Check Your Internet Connection
Even though you are using the offline installer, you still need a stable internet connection to verify some files and components during the installation process. If your internet connection is slow, unstable, or disconnected, you may encounter errors such as "0x800F0906", "0x800F081F", or "0x800F0907". To fix these errors, you need to check your internet connection and make sure it is working properly. You can try the following steps:
Restart your modem and router: Unplug the power cords of your modem and router for a few seconds, then plug them back in. Wait for them to reconnect to the internet and then try installing .NET Framework 3.5 again.
Use a wired connection instead of wireless: