.NET 4.5 Reviews & Product Details

.NET Framework 4.5 is a comprehensive and consistent programming model developed by Microsoft for building applications with visually stunning user experiences, seamless and secure communication, and the ability to model a range of business processes. This version introduces significant enhancements that improve developer productivity and application performance. Key Features and Functionality: - Asynchronous Programming: Incorporates the `async` and `await` keywords, simplifying asynchronous code and enhancing application responsiveness. - Networking Enhancements: Adds support for WebSockets, enabling real-time, bidirectional communication between client and server. - ASP.NET Improvements: Introduces model binding for Web Forms, allowing for cleaner and more maintainable code. - Windows Presentation Foundation (WPF) Enhancements: Includes the new Ribbon control for rich user interfaces and improved performance when displaying large data sets. - Windows Communication Foundation (WCF) Updates: Simplifies configuration and supports multiple authentication modes on a single endpoint. - Windows Workflow Foundation (WF) Enhancements: Adds support for state machine workflows and improved designer features. Primary Value and Solutions Provided: .NET Framework 4.5 addresses the need for developers to create high-performance, scalable, and responsive applications across various platforms. By introducing asynchronous programming patterns, it allows applications to remain responsive under heavy workloads. The support for WebSockets and improved networking capabilities enable the development of modern web applications with real-time communication features. Enhancements in ASP.NET, WPF, WCF, and WF provide developers with powerful tools to build rich user interfaces, efficient communication systems, and complex workflows, thereby reducing development time and improving application maintainability.

Seller

Microsoft

Discussions

.NET 4.5 Community

Solution Type

Best-of-Breed

Overview by

Mayank Kaushik

Value at a Glance

Averages based on real user reviews.

Time to Implement

1 month

Perceived Cost

$$$$$

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Top-Rated Alternatives

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User Insights

Average based on 82 real user reviews.

Implementation Time

1 month

Perceived Cost

$$$$$

.NET 4.5 Integrations

(3)

Integration information sourced from real user reviews.

.NET 4.5 Reviews FAQs

Generated using AI

Last updated: Nov 01, 2026

What is .NET 4.5, and what problem is it built to solve?

.NET 4.5 is a development framework used to build Windows desktop, web, and backend applications. It helps teams create and maintain business applications, including existing Windows-based systems.

What company sizes and industries is .NET 4.5 the best fit for?

The clearest fit is across small, mid-market, and enterprise teams, with strong representation in software and IT-related industries.

Company size: Small businesses, mid-market organizations, and enterprises.
Industry: Information technology and services, and computer software.
Other represented industries: Consulting and telecommunications.

What customer support options does .NET 4.5 provide, and how do users find the overall support experience?

Support experiences are mixed but useful for teams that can draw on documentation and community resources. Users value those resources, while setup, knowledge transfer, and troubleshooting can take effort.

What features or capabilities could make .NET 4.5 even more useful?

.NET 4.5 could be more useful with better portability and smoother compatibility when updating existing applications. Those improvements would help teams work across more environments and reduce migration friction.

Broader platform support: Improve cross-platform development and deployment beyond Windows.
More dependable upgrades: Reduce compatibility problems with older applications, APIs, and third-party libraries.

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Daniel P.

Autónomo

Mid-Market (51-1000 emp.)

9/20/2018

"Excellent platform"

4.5/5

What do you like best about .NET 4.5?

.NET is a mega platform for executing highly powerful codes, programs and algorithms in Windows environments. The use of .NET 4.5 of the assemblies is really fantastic. When the set determines the action, a running time parallel to the original is established.

There's nothing like .NET 4.5 garbage collection, it's amazing, since it works invisibly, we hardly care as developers of such an important item. The classes of DLLs abstracted in the platform give me an infinite number of options and methods for the development of solid interfaces, truly powerful applications. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Small update, starting with this. The use of .NET 4.5 does not include windows, leaving aside the real complementary innovations in other operating systems.

Another matter

With the creation of .NET Core we can enjoy some important classes, even so, its practical use is still short. Review collected by and hosted on G2.com.

Recommendations to others considering .NET 4.5:

Despite having many elements that make it unique, the power of .NET goes further, and now with the implementation of .NET Core we can count on its robustness in other operating systems. Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

I was able to make robust, secure and productive applications with the use of .NET 4.5, Visual Studio and Windows 10. Microsoft products. Review collected by and hosted on G2.com.

Validated ReviewerIncentivizedSource: G2 invite

Verified User in Accounting

Mid-Market (51-1000 emp.)

5/6/2019

Business partner of the seller or seller's competitor, not included in G2 scores.

"We can create Magic by using .Net 4.5"

3.5/5

What do you like best about .NET 4.5?

we can develop anything using this i used for creating invoices Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

i never see anything like that in this Review collected by and hosted on G2.com.

Current UserValidated ReviewerSource: Seller invite

Verified User in Information Technology and Services

Enterprise (> 1000 emp.)

1/27/2019

".Net 4.5 review"

4/5

What do you like best about .NET 4.5?

It allows to build robust applications also allows a lot of customizations as needed. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

the product sometimes still crashes abruptly. Sometimes it makes you to restart the system else the results produced are not as expected. Review collected by and hosted on G2.com.

Recommendations to others considering .NET 4.5:

.NET 4.5 is good. Also plan to consider .NET core and Azure cloud as the platform going forward as most of the companies are headed in that direction Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

I am using .NET to develop solutions for healthcare platform. The 4.5 version offers benefits such as socket programming, multi threading, asynchronous programming Review collected by and hosted on G2.com.

Validated ReviewerIncentivizedSource: G2 invite

Verified User in Financial Services

Enterprise (> 1000 emp.)

7/12/2018

"Ease of Use and Integration"

5/5

What do you like best about .NET 4.5?

The thing we like the best is the security it offers as we integrate into our application. It has a great ability for backwards compatibility within all our applications. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

One thing that we tend to dislike is the actual upgrade process within our application, but I don't think that has anything to do with the .net framework itself more on how we architected each application. Some legacy code takes more of an effort to keep current. Review collected by and hosted on G2.com.

Recommendations to others considering .NET 4.5:

.NET helps us with the reduction of developmental as well as cost in order for us to be an efficient and effective IT organization. Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

Some business benefits is .net's ability to handle many of our business processes, one of which includes the ease of deployment across all our applications. Being a government contractor security is a big thing with our company, and the .net framework provides that for us. Review collected by and hosted on G2.com.

Validated ReviewerIncentivizedSource: G2 invite

Bertrand T.

Directeur Technique des Développements Informatiques

Enterprise (> 1000 emp.)

7/30/2018

"Great framework for development"

5/5

What do you like best about .NET 4.5?

Many additions were made on .NET framework 4.5, among those asynchronous calls, Workflow foundation, WPF, WCF, networking, web.

C# is a great language to work with, with great performance. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

In C# 4.5 it was not possible to run as is on other environment like Linux. Review collected by and hosted on G2.com.

Current UserValidated ReviewerIncentivizedSource: G2 invite

Verified User in Health, Wellness and Fitness

Mid-Market (51-1000 emp.)

8/7/2018

"Microsoft .NET 4.5 is an amazing framework for software development"

5/5

What do you like best about .NET 4.5?

Very flexible with an enormous amount of class libraries; makes development enjoyable and allows you to focus on delivering business value Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Have not found any drawbacks to using the version of .NET; very stable Review collected by and hosted on G2.com.

Current UserValidated ReviewerSource: Seller invite

Verified User in Hospital & Health Care

Mid-Market (51-1000 emp.)

7/28/2018

"Changes can be done easily"

4/5

What do you like best about .NET 4.5?

one of the best choices for developing web based and desktop based application and it makes complex application looks easier. With versatile and dynamic library it ensures security and rapid development. this software able to make new applications and also helps with security. easy to use Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

I don't have any kind of dislikes on this product or software because it is easy to use one of the best choices to create or make web based programs.it also help with security and improves the speed with in the system and provides a integration in all aspects. Review collected by and hosted on G2.com.

Validated ReviewerSource: Seller invite

Verified User in Computer Software

Mid-Market (51-1000 emp.)

8/1/2018

Business partner of the seller or seller's competitor, not included in G2 scores.

"Full time .NET developer"

4.5/5

What do you like best about .NET 4.5?

I do like the strongly typed nature. Also, the Visual Studio as IDE make the perfect experience. Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Cross platform support which has been overcome in .NET Core. Review collected by and hosted on G2.com.

Current UserValidated ReviewerSource: Seller invite

Lee C.

Small-Business (50 or fewer emp.)

5/31/2018

"It's a bit out of date now."

2.5/5

What do you like best about .NET 4.5?

.Net 4.5 paved the way for massive changes in the framework ultimately leading to 4.7 and to .Net Core (which I love). Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

Nothing I really dislike, the 4.5 version of the framework just feels a bit cumbersome in some places now with the improvements in 4.6, 4.7 and Core Review collected by and hosted on G2.com.

Validated ReviewerIncentivizedSource: G2 invite

Jordan M.

Software Engineer

Chemicals

Mid-Market (51-1000 emp.)

Updated 12/14/2017

Originally submitted 11/27/2017

"Best .Net Update in Years"

4.5/5

What do you like best about .NET 4.5?

Great new features building on the already powerful framework of .NET. This version adds the async and await constructs, zip file handling, regex timeouts, and much more Review collected by and hosted on G2.com.

What do you dislike about .NET 4.5?

The framework is so vast it is hard to tell what is new and little time saving features are not always advertised. Review collected by and hosted on G2.com.

Recommendations to others considering .NET 4.5:

It is a vast and powerful framework but do not be intimidated by its size or complexity. Once you learn the basics, it is easy to pick up the time saving shortcuts. A quick web search usually leads to many others with similar questions on usage or problems Review collected by and hosted on G2.com.

What problems is .NET 4.5 solving and how is that benefiting you?

The .Net framework allows me to build high quality applications and focus on the differentiating business needs of our company rather than having to spend time writing boilerplate UI code, IO code, or other simple tasks. Review collected by and hosted on G2.com.