Microsoft .NET Framework 3.5 SP 1 - a set of libraries and system components that are necessary for the operation of applications based on the .NET Framework architecture. This package is a cumulative update that contains many new features based on the .NET Framework 2.0, .NET Framework 3.0, .NET Framework 3.5, and includes cumulative service updates for the .NET Framework 2.0 and .NET Framework 3.0 subcomponents.

Microsoft .NET Framework 3.5 SP1 contains the following new features and enhancements:

– ASP.NET Dynamic Data, which provides a rich scaffolding platform that enables data-driven development without writing code. They also contain a new addition to ASP.NET AJAX that provides support for managing browser history (back button support).

– Basic improvements to the common language runtime (CLR), including: improved image layout in native .NET Framework codes; avoiding strict name checking for fully trusted assemblies; improved performance when launching applications; Improved code generation that reduces the execution time of completed applications; and the ability to execute managed code in ASLR mode (injecting randomness into the address space structure), if supported by the operating system. Additionally, managed applications opened from network folders, behave the same as native applications due to execution with full confidence.

– WPF (Windows Presentation Foundation) performance improvements, including reduced startup time and improved performance for bitmap effects. Additional WPF features include improved support for business applications, support for native splash screens, support for texture builders, and new element WebBrowser controls.

– ClickOnce application publishers can opt out of application signing and hashing if this option better suits their scenarios. Developers can programmatically install ClickOnce applications that display custom brand information. Dialog boxes ClickOnce errors support links to application-specific support sites on the Internet.

– Entity Framework - development of the existing set of ADO.NET data access technologies. Entity Framework allows developers to program relational database operations according to application-specific domain models rather than basic models databases. Entity Framework introduces some additional functions, including support for new types SQL Server 2008, Default Entity Graph Serialization and Entity Data Source. This version of Entity Framework supports the new SQL Server 2008 streaming capabilities for dates and files. Working with graph serialization makes it easier for developers to build Windows Communication Foundation (WCF) services that use the modeling of complete graphs as data contracts. The Entity Data Source allows web application creators who want to work with the Entity Framework to use traditional data source techniques for ASP.NET.

– LINQ to SQL supports new SQL Server 2008 streaming capabilities for dates and files.

– The ADO.NET Data Services Framework consists of a combination of templates and libraries that allow you to expose data as a flexible, REST-based data service that can be ingested by web clients in corporate networks or on the Internet. The ADO.NET Data Services Platform allows you to create data services from any data source. The conceptual model of viewing the underlying storage schema can be easily made accessible through rich integration with the ADO.NET Entity Framework. Services built using the ADO.NET Data Services Framework and compatible services Windows Live(dev.live.com), easily accessible from any platform. A set of client libraries is available for client applications running on Microsoft platforms to simplify interaction with data services. For example, clients based on the .NET Framework can use LINQ to query data services and a simple .NET Framework object layer to update data in the service.

– Windows Communication Foundation now makes using the DataContract serializer easier with improved interoperability support. It improves debugging performance in partial-trust scenarios and expands support for the RSS protocol, allowing it to be more widely used in Web applications 2.0.

– The .NET Framework Data Provider for SQL Server (SqlClient) adds support for the ability to use file streams and sparse columns in SQL Server 2008.

Surely many have heard about Microsoft .NET libraries, which are often the core of various applications. The interaction between the software that uses it and the libraries themselves is carried out through system components of the .NET Framework. Without them, many applications simply will not install.

Current versions of the .NET Framework are considered 4.6 And 4.7 , which also include the old edition 4.5 . They are built into Windows 10 and should not pose any problems installing or using them. The situation is different with already outdated version 3.5 . It was widely used in Windows times 7 and is not compatible with .NET Framework 4.x. Since version 3.5 is not included in Windows 10 by default, many older programs simply will not install.

How to download and install .NET Framework 3.5 on Windows 10

The developers have provided the option to install the old version of the .NET Framework in the Windows 10 Component Service. To download the library, you will need an Internet connection.

How to download the .NET Framework 3.5 installer for Windows 10

If for some reason you are unable to use the Windows Component Service, you have the option of downloading and running the .NET Framework 3.5 online installer.

How to install .NET Framework 3.5 without the Internet (offline)

Sometimes when using the Center web service Windows updates Issues occur and users are unable to install .NET Framework 3.5 using the two methods described above. In such a case you can use bootable USB flash drive With Windows image 10 for manual installation component (without the need for an Internet connection).

Therefore, .NET Framework 3.5 can be installed without using an Internet connection or Windows Update services.

".Net Framework" is a special software platform with which a huge number of applications are written for the Windows operating system. For such programs to work, the .NET Framework environment must be installed on your computer.

On this page you can download the required version of the .NET Framework installer for free. Also, you can learn about the purpose of the .NET Framework, system requirements and read the instructions for installing or correcting errors related to its operation on different versions Windows.

Introduction. Why do you need the .Net Framework?

What is the .Net Framework? Microsoft .Net Framework– a distributed software platform that is used to develop modern software. Architecture « .Net":

• Allows developers not to waste time working out the interaction of the created product with the environment in which it will be executed (be it hardware characteristics, compatibility, OS features or other technical aspects of the environment).

All the nuances of creating a comfortable working environment for an application or software are taken care of by the .Net Framework

• It can work with many programming languages ​​using a set of special algorithms, which gives application creators the opportunity to use almost any known principle of constructing program code for their software.

In other words, .Net Framework becomes the basis for running applications on various OSes, giving end consumers the opportunity to use any applications compatible with this component, regardless of the characteristics of the computer or any other device.

System requirements for optimal performance of the .Net Framework

Requirements for hardware components for normal operation .Net Framework low enough that the component will work even in the most weak computer. The rest of the information in this chapter is primarily intended for first-time users.
Those more advanced can skip to the chapter where you will learn about. Your computer is required to:

• Processor frequency 1 GHz and higher;
• Volume random access memory no less 512 MB;
• Minimum amount of hard disk space in size 4.5 GB.

The .Net Framework has quite a few versions that have been released since the days of Windows XP, but there have been no major changes in the architecture of the component. Remember that the package version .Net Framework, on which this or that program was developed will require relevant(2, 3, 4 ) version on your computer.
Therefore, for best compatibility with the maximum number of applications, all possible variations of this component should be installed. But this does not mean that the latest libraries will be fully supported by older operating systems.
Sometimes, in order to install the appropriate version of the .Net Framework, you need to upgrade to a new one Windows versions.
We strongly recommend that users install Windows 10.

Determining the bit depth of the operating system: x32 (x86) or x64

Bit depth of your operating system (if necessary), you can look in "Properties" computer.
Figure 1. Find out the system capacity.
This information will be required when installing older versions .Net Framework.
The new libraries are suitable for operating systems of both bit sizes (x32-x64).

Latest version of .Net Framework available for installation on your OS

Last .Net Framework, which can be installed on all these OS (except Windows XP) manually - this is version 4.7. Before installing a component on your computer, make sure that the version you need is not integrated into the OS default by reading the following information:

• Windows XP. Integrated version – 1.0 SP2;
• Windows Integrated Versions – 2.0 SP2, 3.0 SP2 And 3.5 SP1;
• Windows 8 or 8.1. Integrated versions – 4.5 And 4.5.1 respectively for these OS;
• Windows Integrated Version – 4.6 or 4.6.1 depending on installed updates.

note!

Latest versions of .Net Framework do not contain all those libraries that were previously in older versions of the .NET Framework.
This means that in order to run some old programs or games, you will have to install the old(!) versions of the .NET Framework necessary for their operation.

It is also necessary to remember: pre-installed libraries cannot be removed using standard means of the operating system itself.

How to install the correct version of .Net Framework

Let's assume that you needed an earlier version of the component to run specific application.
Typically, the software itself notifies the user that the required version is not available on the OS. .Net Framework, displaying the corresponding error window. An example of such a message is shown in the figure below:

Figure 2. Example of a message about the missing version of the .Net Framework.
In this case, you simply need to download the required version of the component for your OS (observing the bit depth, of course) using a special installer, which comes in two types:

1. Online (web) The installer downloads all the necessary files .Net Framework from Microsoft servers and independently unpacks the downloaded data. Requires an Internet connection.
2. Autonomous (full) the installer already contains all the libraries that are needed for a full installation .Net Framework without an internet connection.

There are no other fundamental differences. When using the standalone version of the component, installation errors occur somewhat less frequently, so when searching, links will most often lead to it. To quickly jump to downloading the desired version, go back and click on the header with the name of the component you need.

Download .Net Framework 4.7 (including versions: 4.6.2, 4.6.1, 4.6, 4.5.2 and 4)

On this moment(October, 2017) version .Net Framework 4.7 is the last one. Download this component in full relieves from the need to download the following versions:

• .Net Framework 4.6 (4.6.1 And 4.6.2 );
• .Net Framework 4.5 (4.5.1 And 4.5.2 );
• .Net Framework 4.

You can download .Net Framework 4.7 from our website using a direct link or from the page of the official Microsoft website dedicated to the version of the component 4.7, where you can also find additional information (system requirements, restrictions, etc.)
Version 4.7 supported by the following OS of any bit depth (x32-x64):

• Windows 10 Creators Update(integrated);
• Windows 10 Anniversary Update;
• Windows 8 or 8.1;
• Windows 7;
• Windows Server 2016, 2012 and 2008.

If the component does not install or does not work correctly, read the chapter: .

Download .Net Framework 3.5 (including versions: 3.0 and 2.0)

You can check out additional information and download .Net Framework 3.5 on the Microsoft website or download the library in one file from our website using the links provided.

NET Framework is evolving, and newer versions may lack some components that were previously present in older versions. earlier versions.

This happens by various reasons: some components could become outdated, no longer relevant, or they could be replaced by new, more advanced components of the Framework. Some older applications may require exactly those old components that are missing in new versions, which requires installing one of the older versions of the MS .NET Framework. Version 3.5 already includes minor versions of libraries (so there is no need to download them separately):

• .Net Framework 2.0;
• .Net Framework 3.0.

This component is compatible with any currently used Microsoft operating system, including Windows XP. Installation .Net Framework 3.5 in most cases, it will allow you to launch and ensure normal operation of any old program or game. However, if you are experiencing problems with this version of the component, please review the information in the next chapter.

Errors during installation or operation of the .Net Framework

Sometimes incorrect installation or update .Net Framework may result in component malfunctions. This chapter provides information on various errors that you may encounter at different stages of using libraries. ".Net".First you need to download the official utility from Microsoft called ".Net Framework Repair Tool", which will automatically help solve the problem with the component. You will find instructions for this program below.

.NET Framework Repair Tool will find and fix most crashes

According to the Microsoft website, this utility solves problems when working and installing or updating any version .Net Framework.

Microsoft .Net Framework Repair Tool ( online version). | 1.22 MB The utility is designed to identify the most common problems when working or installing the .NET Framework, as well as their automatic elimination.

Unfortunately, "Repair Tool" does not support Russian language. However, all the processes occurring in it are simple and intuitive. The user is required to:

1. Press the button periodically "Next";
2. Agree with the application of the proposed changes.

The program will test the system in several stages.

If an error is detected, actions to eliminate it will be proposed. After confirmation, you must wait until the utility completes and restart your computer.
Figure 3. Testing process with the Microsoft .Net Framework Repair Tool.
Errors the next time the system starts .Net Framework will be corrected, and you will be able to reinstall the required version of the component (if this process was previously accompanied by failures).

If the problem recurs during installation or operation of a component after using the program, please read the detailed information on specific errors described in the following chapters.

Error installing .Net Framework update 0x80070643 on Windows 7

Error 643 work related "Update Center". Occurs mainly in Windows users 7.Attention!
It is recommended that you begin the actions described below only after familiarizing yourself with the program from the chapter:.
If "Repair Tool" did not find a problem, you should restart Update centre Windows using a ready-made program written specifically for website or using a command algorithm that you can create yourself using the instructions described below.

The executable code is the same in both cases.

The program was created solely for convenience: when using it, you do not have to carry out any manual manipulations. Next will be described manual method

restarting the system update.

1. Carefully follow the following instructions: Create an empty one Text Document

and copy the following code into it:
@echo
attrib -h -r -s %windir%\system32\catroot2
attrib -h -r -s %windir%\system32\catroot2\*.*
net stop wuauserv
net stop CryptSvc
net stop BITS
ren %windir%\system32\catroot2 catroot2.old
ren %windir%\SoftwareDistribution SoftwareDistribution.old
ren "%ALLUSERSPROFILE%\application data\Microsoft\Network\downloader" downloader.old
net Start BITS
net start CryptSvc
net start wuauserv

1. pause Save the file with the extension ;
2. ".bat" Run the created program.

On on behalf of administrator Figure 4

you can take a closer look at the second step.
Now all that remains is to restart the computer and re-install .Net Framework.

Error when installing .Net Framework 3.5: 0x800F0906, 0x800F081F, 0x800F0907 on Windows 8 or 8.1

This issue occurs when trying to install .Net Framework 3.5.Before performing the steps described below, it is recommended that you read the chapter: . Errors 0x800F0906, 0x800F081F, 0x800F0907 in most cases appear when installing .NET Framework 3.5, when security updates are installed on the operating system KB2966826 And KB2966828.

This is most likely due to the fact that some Windows updates may not be tested to work or interact with the .NET Framework 3.5 installer.

MS developers assumed that users would use new, more current versions of the Framework, and the .NET Framework 3.5 installer itself was created long before these updates, and does not take into account the changes in policies and security mechanisms that they bring.

To use .Net Framework 3.5 (and below) on new OSes, you must:

1. Temporarily disable "Windows Update";
2. Delete KB2966826 And KB2966828 through standard remedy"Installation and removal of programms";
3. Restart your computer and repeat installation .Net Framework.

After installing the component, you can turn it back on automatic updates.

Selecting the hard drive and folder to extract .NET before installation (the installer can choose the drive, for example drive A:)

The installer of the latest versions of the .NET Framework selects the destination drive and folder at its discretion. This may be a rather non-obvious choice, for example drive A:, or another drive not intended for these tasks.
To get around this problem, just run the installation using command line(see Figure 5): Figure 5. Installation of .NET Framework 4.7.1 with unpacking into a specific folder.

Microsoft .NET Framework is a digital platform that allows you to create, launch correctly and use various applications or games, in the creation of which, parts of one specific application are written differently program codes. This platform is a digital environment in which different codes of a single application are compiled into one transferable code, which in turn is understandable by the Framework itself. Then the moving code is compiled into understandable code for the operating system for which the application was developed. For example for Windows 7/8/10

You can install this platform in various ways.

• Having installed operating system, whose update package already includes this platform.
• Download Net Framework and then install. (Official links on our website)
• Install as additional software when installing the game.
• Install automatically using Windows Update

There are cases: When starting a game or application, a window with approximate content pops up on the screen: “(application name) requires the presence of. NO Framework. Please download and install Net Framework 3.5 or higher." What does startup do? this application impossible without this platform. If you have Microsoft Net Framework 4.7 installed, this does not mean that you do not need older versions. You will need to install both Microsoft Net Framework 4 and previous versions. It is highly recommended to install all existing ones regarding your operating system.

Select and install the versions you need for Windows XP, Vista, 7, 8,10

Microsoft .NET Framework 1.0

Download Microsoft .NET Framework 1.0 for 32/64 bit

Microsoft .NET Framework 1.1

Download Microsoft .NET Framework 1.1 for 32/64 bit

Microsoft .NET Framework 2.0

For 32 bit

Download Microsoft .NET Framework 2.0 for 64 bit

Microsoft .NET Framework 3.0

Download Microsoft .NET Framework 3.0 for 32/64 bit

Microsoft .NET Framework 3.5

Download Microsoft .NET Framework 3.5 for 32/64 bit

Microsoft .NET Framework 4.0

Download Microsoft .NET Framework 4.0 for 32/64 bit

Microsoft .NET Framework 4.5

Download Microsoft .NET Framework 4.5 for 32/64 bit

Microsoft .NET Framework 4.5.1

Download Microsoft .NET Framework 4.5.1 for 32/64 bit

Microsoft .NET Framework 4.5.2

Download Microsoft .NET Framework 4.5.2 for 32/64 bit

Microsoft .NET Framework 4.6

Download Microsoft .NET Framework 4.6 for 32/64 bit

Microsoft .NET Framework 4.6.1

Download Microsoft .NET Framework 4.6.1 for 32/64 bit

Microsoft .NET Framework 4.6.2

Download Microsoft .NET Framework 4.6.2 for 32/64 bit

Microsoft .NET Framework 4.7

Download Microsoft .NET Framework 4.7 for 32/64 bit

Microsoft .NET Framework 4.7.1

Download Microsoft .NET Framework 4.7.1 for 32/64 bit

Version 3.5, which includes earlier ones, and version 4.7.1 (the latest at the moment) must be installed.

We will be glad to hear your feedback, we will also help you install components and correct errors. Write everything in the comments below

.NET Framework(read “dot net framework”) is a universal platform for developers in different programming languages. A popular claim is that Microsoft created it as an alternative and competitor to Java. The working version first appeared on the company’s website in 2002, and the presentation took place in 2000.

Version 3.5 The .NET Framework uses Common Language Runtime 2. It was released in 2008. Service packs for Windows 8 have also been implemented.

In comparison with the previous release of the platform, support for C# 3 has appeared, ASP.NET AJAX and the LINQ language with corresponding providers for SQL, XML and Obj have been added. Version 9 of VB.NET and Visual Studio is supported.

Current release .NET Framework 3.5 contains a huge number of class libraries used in the development of various applications and necessary to run them.

Currently, installing a framework is a necessity not only for programmers, but also for ordinary users. If a number of components are missing in the system, some work and gaming applications may display an error message related to the absence of the necessary dlls (dynamic libraries) that are accessed during operation. Often, work without them becomes impossible. Therefore, it is necessary to maintain the current versions of this software. It is distributed free of charge, installs quickly, just run the file "dotnetfx35setup.exe" and follow simple instructions. After installing the package, a reboot is required.

Supported systems (x32/x64):

• Windows 10;
• Windows 8;
• Windows 7 and older;

Screenshots