As of April 2026, Telerik JustDecompile is retired and no longer receives updates or official downloads from Progress Software . The product was officially discontinued on April 2, 2024
, meaning there is no "2026 updated" version of the installer. Telerik.com Current Status and Availability Retirement:
Progress Software has removed JustDecompile from its active developer tools portfolio to focus on other solutions like Kendo UI and Telerik UI bundles. Offline Installer Access:
Official offline installers (MSI or ZIP) were previously available through the Telerik JustDecompile FAQ page , but new official downloads are currently blocked. Usage Rights:
If you already have the installer or the software installed, you can continue to use it indefinitely. Open Source Engine: While the full tool is retired, the Telerik JustDecompile Engine
remains open source on GitHub, allowing developers to view or modify the core decompilation logic. Telerik.com Key Features of the Final Version
The last stable versions of JustDecompile included several high-performance features:
Rated up to 10x faster than leading paid competitors for .NET framework decompilation. Project Creation:
Ability to create a complete Visual Studio project from a decompiled assembly. Multi-Tab Interface:
Support for switching between different methods and assemblies in a single instance. Extensibility:
A Plugin Manager for deobfuscation (using De4dot) and other community extensions. Telerik.com Alternatives for 2026
Since JustDecompile is no longer updated, developers typically use these active alternatives: An open-source .NET assembly browser and decompiler.
A popular tool for reverse engineering and debugging .NET assemblies (community-maintained forks available).
A free standalone .NET decompiler and assembly browser from JetBrains. installation guides
for one of the active alternatives, or are you looking for a specific archived version of the JustDecompile installer? JustDecompile FAQ - Telerik.com
Telerik JustDecompile Offline Installer: Updated Guide for 2026
Telerik JustDecompile remains a staple in the .NET developer’s toolkit for its speed and simplicity in assembly browsing. While Telerik has officially retired the product to focus on modern AI-integrated UI suites like Telerik UI for ASP.NET Core, existing users and those with the installer can continue to use it perpetually. Key Features of Telerik JustDecompile
Even as a retired tool, JustDecompile offers several high-performance features that keep it relevant for legacy and modern .NET exploration:
Exceptional Speed: It is noted as being up to 10 times faster than leading paid competitors during .NET framework decompilation.
Visual Studio Project Creation: You can recreate a complete Visual Studio project from a decompiled assembly, ensuring code is never truly lost.
Comprehensive Search & Navigation: Robust search methods allow you to pinpoint specific problems and navigate effortlessly through types, methods, or members.
Extensibility: A dedicated Plugin Manager allows for downloading and managing extensions (like Reflexil or De4dot) directly within the UI.
Support for Multiple Formats: It handles traditional .NET assemblies as well as APPX and WinMD (WinRT) file formats. How to Get the Offline Installer
Because new official downloads from Telerik are no longer available, developers often rely on their Telerik Account archives or secondary distribution methods:
Check Your Telerik Account: If you have previously used Telerik products, log in to your account and check the Downloads section under retired or legacy products.
MSI Installation: The recommended way to install is via the .msi installer, which automatically registers assemblies in the machine GAC and configures necessary paths.
Zip File Distribution: JustDecompile is also available as a standalone ZIP file. This "portable" version can be placed on a USB drive or server for quick use without a formal installation process. System Requirements & Compatibility
JustDecompile is designed for low overhead and broad Windows support: Framework: Requires at least .NET 4.0 to run. telerik justdecompile offline installer updated
OS Support: Compatible with Windows Vista through Windows 11.
Hardware: Minimum 1 GHz processor and 512 MB of RAM, though 1 GB of RAM is recommended for smoother performance with large assemblies. Modern Alternatives for 2026
Since JustDecompile no longer receives active updates, Telerik recommends these free alternatives for modern platform support:
ILSpy: A popular open-source .NET assembly browser and decompiler.
dotPeek: A free standalone decompiler by JetBrains that also provides powerful navigation features.
Still Going Strong: Getting the Telerik JustDecompile Offline Installer (2026 Update)
If you have been a .NET developer for a while, you know that Telerik JustDecompile was the go-to tool for fast, reliable assembly browsing. While Telerik officially retired the product on April 2, 2024, many developers still rely on it for legacy projects and quick code analysis.
The challenge? Since the official "future downloads" have been discontinued from the primary product page, finding a reliable offline installer (MSI or ZIP) is now a bit of a treasure hunt. Why You Still Need an Offline Installer
In 2026, many development environments are strictly firewalled or air-gapped for security. Relying on an online "web installer" is no longer an option for many enterprise teams. Having an offline installer ensures you can: Install without an internet connection on secure servers.
Keep a portable version on a USB drive using the ZIP distribution.
Ensure version stability by avoiding forced updates that might break your existing workflow. Current Status & Latest Versions
As of early 2026, the last verified stable build remains version 2024.1.131.0. Telerik has confirmed this version contains no known vulnerabilities and is safe for continued use. Where to Find the Offline Installer
Since the standard download button on the main Telerik site has been retired, here is how you can still grab the offline bits:
Your Telerik Account: If you have previously used JustDecompile, check your Telerik Account Downloads section. Telerik often keeps historical installers available for existing users even after a product is "retired".
Official FAQ Workaround: The JustDecompile FAQ has historically hosted a direct link for those needing the MSI or ZIP format for offline distribution.
Third-Party Repositories: Sites like FileHippo maintain a history of older versions (such as the 2018 and 2019 builds) if you need a specific legacy version for compatibility. Features That Still Make it Relevant
Even without new updates, JustDecompile holds its own against newer tools:
10x Speed: It remains significantly faster at decompiling the entire .NET framework compared to many paid competitors.
Create Project: The ability to export a decompiled assembly directly into a Visual Studio project is a lifesaver for recovering lost source code.
Open Source Engine: While the UI is proprietary, the core decompilation engine is open-source (Apache 2.0 license), meaning the community can still inspect and contribute to the logic. Telerik JustDecompile is Retired
Solution: The offline installer does not include Visual C++ runtimes. Pre-install the VC++ 2015-2022 redistributable (x64 or x86) from a separate offline package.
Solution: The software tries to phone home for telemetry. Disable this by adding --disable-telemetry to the shortcut target. Alternatively, block justdecompile.com in your hosts file (127.0.0.1 telemetry.telerik.com).
There is no longer an officially published, standalone offline installer for the free version of Telerik JustDecompile.
Since around 2021–2022, Progress (Telerik) has shifted to distributing JustDecompile exclusively through:
For a true offline installer, you must either:
A recent case study involved a defense contractor using the Telerik JustDecompile offline installer updated to a classified network with no internet access. Their workflow:
The result? The offline installer worked flawlessly, and the team recovered 98% of the lost logic within two weeks. As of April 2026, Telerik JustDecompile is retired
Solution: You likely downloaded the 64-bit installer for a 32-bit system. Telerik offers both. Download the x86 version if needed.
The "story" of the Telerik JustDecompile offline installer has reached its final chapter. For over a decade, it was a staple for .NET developers, but as of April 2, 2024, Progress Telerik officially retired the product.
Here is the timeline of how the "updated" offline installer journey evolved and ultimately ended: 1. The Glory Days: "Fast and Free Forever"
Released around 2011, JustDecompile was marketed as the "fastest decompiler," often claiming to be 10x faster than its competitors. It was a free alternative to tools like .NET Reflector, which had shifted to a paid model. For years, the offline installer was the gold standard for developers working in secure environments or on machines without constant internet access. 2. The Final "Update" (Version 2024.1.131.0)
The last significant update to the offline installer addressed a critical security vulnerability (CVE-2024-0219), which could allow privilege elevation.
The "Latest" Version: Telerik confirmed that 2024.1.131.0 is the absolute final version of the tool.
No More New Versions: There are no planned updates for 2025 or 2026. The official Telerik Release History for 2026 shows updates for products like Fiddler and UI for Blazor, but JustDecompile is notably absent. 3. Retirement and the "Boneyard"
In April 2024, Progress Software stopped offering new downloads of JustDecompile.
Current Status: If you already have the offline installer, you can keep using it indefinitely, but you can no longer download it from the official Telerik site.
The Open Source Legacy: While the UI is closed, the underlying JustDecompile Engine was open-sourced under the Apache 2.0 license. However, its official GitHub repository has been moved to the "boneyard" and hasn't seen major activity in years. 4. What Now?
Since the official offline installer is no longer updated or available for new users, Telerik and the developer community suggest these alternatives: The Story Behind JustDecompile - Telerik.com
Telerik JustDecompile has been officially discontinued and retired as of April 2, 2024. Because of this, there are no longer any official "updated" installers or active support from Progress Software. Current Status of JustDecompile
Retired: Progress Software no longer offers new downloads for JustDecompile on its primary product pages.
Final Versions: The last reported stable version was 2024.1.131.0.
Vulnerability Fix: This final version (2024 R1) addressed a privilege elevation vulnerability (CVE-2024-0219) found in previous installers. How to Get the Offline Installer
While no longer actively updated, you may still be able to find the final offline installer through these methods:
Telerik Account: If you previously had a license or account, check your Telerik Downloads page for the legacy MSI or ZIP files.
Offline Trial Page: Telerik maintains an Offline Trial Download page that occasionally lists MSI packages for various products, though JustDecompile's availability there is now limited.
Third-Party Mirrors: Versions like 2019.1.116.1 remain available on reputable mirrors like FileHippo, but these are not official sources and may not contain the final security fixes. Recommended Alternatives
Since JustDecompile is no longer updated, many developers have moved to:
ILSpy: An open-source .NET decompiler that is frequently updated.
dnSpy: Excellent for both decompiling and debugging .NET assemblies. dotPeek: A free standalone decompiler by JetBrains. JustDecompile FAQ - Telerik
Telerik JustDecompile was officially retired as of April 2, 2024, and as of 2026, it is no longer actively maintained or supported by Progress Telerik. The final stable release of the software is version 2024.1.131.0, which was released in late 2024 to address a specific privilege elevation vulnerability (CVE-2024-0219). Offline Installer Availability
While Progress Telerik has discontinued new official downloads of the standalone tool, users who already have it can continue using it indefinitely.
Final Version: 2024.1.131.0 (some third-party mirrors like FileHorse may list slightly different build numbers like 2024.2.513.0, but the core engine development has ceased).
Offline Packages: Historically, Telerik provided MSI or ZIP files for offline installation, but these are no longer easily accessible via the official website's primary navigation.
Third-Party Mirrors: Repositories such as FileHorse and CNET Download currently host the latest installer (approx. 4.33 MB), though use caution with third-party sites. 2026 Review & Assessment The Short Answer (Updated) There is no longer
Despite its retirement, JustDecompile remains a lightweight and capable tool for older .NET projects. Pros:
Performance: It is noted for high decompilation speed, often outperforming older paid competitors.
Features: Includes "Create Project" functionality, which attempts to rebuild a full Visual Studio project from a decompiled assembly.
Legacy Support: Excellent for .NET Framework (2.0–4.5), Silverlight, and WinRT metadata files. Cons:
No Modern Updates: It does not receive official support for the latest .NET versions (e.g., .NET 8/9/10).
Vulnerability Risks: While the final version fixed CVE-2024-0219, no future security patches will be issued.
Limited Ecosystem: The official plugin manager and engine are largely static or moved to community-driven forks like CodemerxDecompile. Recommended Alternatives
Since JustDecompile is no longer evolving, most developers in 2026 have moved to the following free, actively maintained tools:
ILSpy: An open-source .NET decompiler that frequently updates for the newest .NET releases.
JetBrains dotPeek: A free standalone tool from JetBrains that offers advanced features and tight integration with other developer workflows. NET 9 or 10 frameworks? AI responses may include mistakes. Learn more JustDecompile - Download for Windows - FileHorse
Telerik JustDecompile Offline Installer Updated: A Game-Changer for .NET Developers
As a .NET developer, you're likely no stranger to the challenges of debugging and troubleshooting complex applications. One of the most frustrating experiences can be dealing with obfuscated or decompiled code, which can make it nearly impossible to understand the inner workings of a program. That's where Telerik's JustDecompile comes in – a powerful tool that allows you to decompile .NET assemblies and gain insights into the code.
In recent years, Telerik has been a leader in the .NET development space, providing a range of innovative tools and solutions to help developers build, test, and deploy applications more efficiently. One of their most popular offerings is JustDecompile, a decompiler that supports a wide range of .NET frameworks and libraries.
What is Telerik JustDecompile?
Telerik JustDecompile is a .NET decompiler that allows you to take a compiled .NET assembly (such as an EXE or DLL file) and turn it back into human-readable code. This can be incredibly useful for a range of scenarios, including:
The Benefits of Telerik JustDecompile
So why choose Telerik JustDecompile over other decompilation tools on the market? Here are just a few benefits:
The Problem with Online Installers
Until recently, Telerik JustDecompile was only available via an online installer that required a constant internet connection to download and install the tool. While this approach made it easy to get started with JustDecompile, it also had some significant drawbacks.
The Solution: Telerik JustDecompile Offline Installer
To address these issues, Telerik has released an offline installer for JustDecompile. This new installer allows you to download the entire toolset and install it on your machine without requiring an internet connection.
The benefits of the offline installer are clear:
What's New in the Updated Offline Installer?
The updated offline installer for Telerik JustDecompile includes a range of new features and improvements, including:
How to Get Started with Telerik JustDecompile Offline Installer
If you're interested in trying out the Telerik JustDecompile offline installer, here's how to get started:
Conclusion
The Telerik JustDecompile offline installer is a game-changer for .NET developers. By providing a reliable and efficient way to decompile .NET assemblies, JustDecompile can help you debug and troubleshoot complex applications more effectively. With its wide framework support, user-friendly interface, and high-quality decompilation, JustDecompile is an essential tool for any .NET developer.
Whether you're a seasoned developer or just starting out, the Telerik JustDecompile offline installer is definitely worth checking out. So why wait? Download the offline installer today and start taking your .NET development to the next level.