The tree view shows all namespaces, types, and members. You can search across multiple assemblies simultaneously—a lifesaver when analyzing a dependency graph.
Title: Telerik JustDecompile – Offline Installer (Latest Updated Version)
Subtitle: Powerful .NET Decompiler. No Internet Required for Installation.
Description: Get the fully updated offline installer for Telerik JustDecompile. Unlike the web installer, this standalone package allows you to install the tool on multiple machines, secure build servers, or air-gapped environments without an internet connection.
Why download the Offline Installer?
Current Version: [Insert version number, e.g., 2024.2.512.0] Release Date: [Insert date] File Size: ~[Insert size, e.g., 42 MB]
Download Links:
System Requirements:
Note: This is the standalone offline installer. No active Telerik account is required to run the decompiler after installation.
Telerik JustDecompile Offline Installer Updated
Telerik has released an updated version of the JustDecompile offline installer, making it easier for developers to decompile .NET assemblies without requiring an internet connection.
What is JustDecompile?
JustDecompile is a popular .NET decompiler developed by Telerik. It allows developers to decompile .NET assemblies, such as DLLs and EXEs, back into their original source code. This can be incredibly useful for debugging, troubleshooting, and understanding how .NET applications work.
What's new in the offline installer?
The updated offline installer for JustDecompile includes several key improvements:
Benefits for developers
The updated offline installer for JustDecompile provides several benefits for developers, including:
How to get the offline installer
The updated offline installer for JustDecompile is available for download from the Telerik website. Developers can download the installer and follow the installation instructions to get started with JustDecompile offline.
Conclusion
The updated offline installer for Telerik JustDecompile is a valuable tool for .NET developers. With its improved decompiler engine, offline decompilation capabilities, and performance enhancements, JustDecompile continues to be a leading .NET decompiler on the market. Download the offline installer today and start decompiling .NET assemblies with ease.
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 telerik justdecompile offline installer updated
The story of the Telerik JustDecompile offline installer is one of a transition from a free developer staple to a retired legacy tool. As of April 2, 2024, Progress Telerik officially retired JustDecompile, meaning official downloads, including the offline installer, are no longer available directly from the Telerik website. The Evolution of JustDecompile
For over a decade, JustDecompile served as a "fast and free forever" .NET decompiler, helping developers recover lost source code and analyze assemblies.
Performance: It gained popularity for being significantly faster than leading competitors, particularly when decompiling .NET Framework assemblies.
Offline Flexibility: Telerik provided an offline installer (as an MSI or ZIP file) specifically for developers who needed to work in environments without internet access or who wanted to run the tool from a portable drive.
Open Source Engine: While the UI remained proprietary, the core decompilation engine was made open-source to allow community contributions. Current Availability and "Updated" Versions
If you are looking for an "updated" offline installer today, you should be aware of the current status:
Official Retirement: No new updates or versions have been released by Telerik since the retirement announcement in early 2024.
Legacy Access: Users who previously downloaded the tool can continue to use it indefinitely, but they cannot retrieve it from official Telerik channels if they lose the installer.
The "New" Version: The original team behind JustDecompile has continued development under a new name: CodemerxDecompile. This version uses the same engine and remains free, serving as the spiritual "updated" successor to the Telerik-branded tool. Recommended Alternatives
Since the official Telerik JustDecompile offline installer is no longer updated, Telerik and the developer community recommend these actively maintained free alternatives: dotPeek: A free standalone .NET decompiler from JetBrains.
ILSpy: The open-source .NET assembly browser and decompiler.
CodemerxDecompile: The direct continuation of the JustDecompile engine by its original creators. Telerik JustDecompile is Retired
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
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
The story of the Telerik JustDecompile offline installer has taken a significant turn: the product is now officially retired. While it was once a staple "fast and free forever" tool for .NET developers, its development has ceased in favor of modern platforms. The Current State of JustDecompile
Retirement Status: Progress (the parent company of Telerik) has discontinued new downloads and feature updates for JustDecompile. The tree view shows all namespaces, types, and members
Legacy Usage: Users who already have the tool or can find the legacy offline installer can still use it, but there is no longer official support or active maintenance.
Successor: A community-driven project called CodemerxDecompile has emerged as the spiritual successor. It utilizes the original JustDecompile engine but has been updated to support the latest .NET versions and cross-platform use on Windows, Mac, and Linux. Why the "Offline Installer" was a Useful Story
Historically, the JustDecompile story was defined by its accessibility and performance:
The Problem: Early versions often used a web-based installer that downloaded files during the process, which was a "productivity killer" for developers on restricted servers.
The Solution: Telerik eventually provided a dedicated MSI or ZIP offline installer to allow installation without an active internet connection, particularly useful for secure development environments.
Performance: At its peak, it was marketed as being 10 times faster than leading paid competitors. Recommended Alternatives
Since JustDecompile is no longer receiving updates, Telerik and the developer community recommend the following modern, free alternatives:
dotPeek (by JetBrains): A powerful free standalone decompiler and assembly browser.
ILSpy: The leading open-source .NET assembly browser and decompiler.
CodemerxDecompile: The updated, cross-platform continuation of the JustDecompile engine.
The following essay explores the significance and evolution of the Telerik JustDecompile offline installer in the context of modern software development.
The Role of Offline Installers in Modern Decompilation: A Study of Telerik JustDecompile
In the ecosystem of .NET development, the ability to recover lost source code, analyze third-party libraries, and debug compiled assemblies is indispensable. Telerik JustDecompile has long stood as a pillar in this space, offering a robust engine for turning executable files back into readable C#, VB.NET, or IL code. While web-based stubs and "thin" installers have become the industry standard for software distribution, the persistent demand for the JustDecompile offline installer
highlights a critical requirement for developers working in secure, restricted, or high-stakes environments. The Necessity of Offline Availability
The primary appeal of an updated offline installer lies in its self-contained nature. For developers operating within "air-gapped" networks—common in government, financial, and high-security corporate sectors—an internet connection is often a luxury or a prohibited risk. An offline installer ensures that the full suite of JustDecompile’s features, including its deep integration with Visual Studio and its ability to create full projects from decompiled assemblies, can be deployed without a single handshake with an external server. This "set-it-and-forget-it" reliability prevents the common frustration of "installation failed" errors caused by firewall restrictions or intermittent connectivity. Evolution and Updates
The "updated" aspect of the installer is equally vital. As Microsoft continues to iterate on the .NET framework, moving from the legacy .NET Framework to the cross-platform .NET 5, 6, and beyond, a decompiler is only as good as its support for the latest language features. Updated versions of JustDecompile bring support for new C# syntax, record types, and asynchronous patterns that would otherwise appear as garbled low-level code in older versions. By packaging these updates into a singular offline executable, Telerik allows teams to standardize their toolset across an entire organization, ensuring that every workstation is equipped with the same high-performance engine regardless of local network conditions. Performance and Plugin Integration
Beyond simple code recovery, JustDecompile is known for its extensibility. The updated offline installer often includes or facilitates the manual addition of essential plugins, such as the Reflexil assembly editor. This transforms the tool from a passive viewer into an active environment for patching and modifying assemblies. In an offline context, having these capabilities pre-packaged or easily sideloaded means that a developer’s workflow remains uninterrupted, maintaining high productivity during critical debugging sessions where time is of the essence. Conclusion
While the trend toward cloud-based delivery continues, the Telerik JustDecompile offline installer remains a foundational tool for the professional developer. It represents a commitment to accessibility and reliability, ensuring that the power of decompilation is available everywhere—from the most connected silicon valley office to the most isolated secure server room. As software complexity grows, the ability to peer into the "black box" of compiled code, safely and independently, remains an essential safeguard for the integrity of the development lifecycle. technical steps
for deploying this installer across a local network or learn about alternative decompilers
The most critical update regarding the Telerik JustDecompile offline installer is that Progress Software has officially retired the product as of April 2, 2024
. While the software remains free and functional for existing users, new downloads and official support have been discontinued. Telerik.com Key Status Updates Retirement:
Future downloads were stopped on April 2, 2024, as Progress Software shifted focus to other developer tools. Availability: New official downloads are no longer offered on the Telerik site . However, the core JustDecompile Engine open source
under the Apache 2.0 license, allowing developers to access and contribute to the underlying decompilation logic. Offline Installer History:
Historically, Telerik provided offline installers as MSI or ZIP files for enterprise environments or users with limited connectivity. Users who previously downloaded these installers can continue using them indefinitely. Telerik.com Core Features & Functionality
Before its retirement, JustDecompile was known for several high-performance features: Performance: It was marketed as being up to 10 times faster than leading competitors in .NET framework decompilation. Project Export: Users could export decompiled assemblies directly into a Visual Studio Project Language Support:
It provided robust support for C# and later added features for file formats. Extensibility:
A built-in Plugin Manager allowed users to install extensions like for deobfuscating code before decompilation. Telerik.com Technical Resources Open Source Repository:
Developers can still find the open-source engine code at the JustDecompile GitHub Archived Documentation:
General information and frequently asked questions are still hosted on the Telerik JustDecompile FAQ Community Forums: While official support has ended, the JustDecompile Forums remain a resource for community-driven troubleshooting. Telerik.com specific version of the offline installer, or would you like to explore current alternatives for .NET decompilation? JustDecompile FAQ - Telerik.com
Telerik has hinted at upcoming features for JustDecompile (source: Progress community forums, Q1 2025):
All these will be included in the future updated offline installer—no forced migration to a subscription model.
Subject: Updated Offline Installer for Telerik JustDecompile – v[Version]
To: Development & Build Teams
The offline installer for Telerik JustDecompile has been updated as of [Date].
Action required: Update your internal deployment scripts or shared software folders with the new version. Current Version: [Insert version number, e
Change log:
Download internal mirror: \\internal-share\tools\justdecompile\offline\
MD5 Checksum: [insert hash] – verify before deployment.
With the shift away from .NET Framework, many decompilers struggled with modern Roslyn-based compilers. The updated JustDecompile now fully supports decompilation of .NET 8 and .NET 9 assemblies, including top-level statements, record types, and new syntactic sugars.
Most modern software uses web-based bootstrappers that download components on the fly. While this reduces the initial download size, it introduces several risks:
An updated offline installer solves all these problems. Telerik provides a standalone MSI or EXE that contains every required file. Once you download the Telerik JustDecompile offline installer updated to version 2025 (or the latest available), you can deploy it across hundreds of machines without any external access.
Don’t wait for an emergency to discover that your web installer fails on a locked-down server. Visit Telerik’s official site today, grab the updated offline installer, and take control of your .NET decompilation workflow.
Call to Action: Have you tried the latest JustDecompile offline installer? Share your experience in the comments below. For step-by-step video tutorials on batch decompilation, subscribe to our newsletter.
Last updated: May 2026. Version numbers accurate as of publication. Always refer to Telerik’s official release notes for the most current build.
Telerik JustDecompile was officially retired and discontinued on April 2, 2024. The final stable version released was 2024.1.131.0, which addressed a known security vulnerability (CVE-2024-0219).
While Progress Software has removed the official download links from their public website, users who previously downloaded the tool can continue to use it indefinitely. For those looking for an "offline installer," the tool was traditionally available as a standalone MSI package or a ZIP file distribution for portable use. Key Features of the Final Version
Fast Decompilation: Efficiently recovers lost source code from .NET assemblies (.dll and .exe) into readable C#, VB.NET, or IL.
Project Export: Includes the "Create Project" feature, allowing you to export a decompiled assembly as a functional Visual Studio project.
Side-by-Side Loading: Supports loading multiple .NET versions (2.0 through 4.5.x, WinRT, and Silverlight) concurrently to resolve references correctly.
Open Source Engine: While the UI is proprietary, the core decompilation engine remains open source and available for community contributions on GitHub.
Portable ZIP Option: The ZIP distribution allows you to run the tool from a USB drive without a formal installation process. How to Acquire the Offline Installer
Since the official Telerik JustDecompile page now directs users to alternatives, you may need to look for the final 2024.1.131.0 build through these methods: JustDecompile FAQ - Telerik
As of April 2026, Telerik JustDecompile has been officially discontinued and transitioned to an open-source project. Consequently, Telerik no longer provides "updated" official offline installers or active support for the tool. Current Status and Availability Discontinuation
: Progress Software (Telerik) ceased active development and commercial distribution of JustDecompile several years ago. Open Source Transition : The project was moved to GitHub under the telerik/justdecompileengine
repository. This allows the community to maintain the core decompilation engine, though the standalone UI installer is no longer updated by Telerik. Offline Installers
: Any "updated" offline installers found on third-party sites are likely older versions (typically from the 2019–2020 era) or community-repackaged versions. Recommended Alternatives
Since JustDecompile is no longer receiving official updates to support modern .NET versions (like .NET 6/7/8), most developers have migrated to the following actively maintained tools: dnSpy / dnSpyEx
: A massive community favorite that includes a decompiler and a debugger. The fork is the most up-to-date version.
: The most popular open-source .NET decompiler. It is frequently updated and available as a standalone tool or a Visual Studio extension.
: A free standalone tool from JetBrains. It is highly robust and offers features similar to those found in ReSharper. Security Warning
Be cautious when searching for "offline installers" on unofficial software mirror sites. Because JustDecompile is no longer officially distributed, these mirrors often bundle outdated versions with unwanted adware or malware. It is safer to use the GitHub releases of the open-source alternatives mentioned above. like ILSpy or dnSpyEx?
Headline: Telerik JustDecompile: New Offline Installer Released for Seamless .NET Debugging
Introduction For .NET developers, a reliable decompiler is an essential part of the toolkit. Whether you are troubleshooting a third-party library, recovering lost source code, or exploring the inner workings of the .NET framework, Telerik JustDecompile has long been a go-to solution. We are pleased to announce that the offline installer for Telerik JustDecompile has been updated, ensuring developers can install the tool in secure environments without the need for an active internet connection during setup.
What is Telerik JustDecompile? JustDecompile is a free .NET decompiler tool that allows developers to easily browse and analyze compiled .NET assemblies. It is renowned for its fast loading times and user-friendly interface. Key features include:
Why the Updated Offline Installer Matters In modern development workflows, security and environment isolation are paramount. The newly updated offline installer addresses the specific needs of enterprise and security-conscious developers:
Key Updates Included This release focuses on stability and compatibility. The updated installer includes:
How to Get It The updated offline installer is available immediately. Users can download the package from the Progress Telerik website or via their Telerik account dashboard.
Conclusion Telerik JustDecompile remains a staple in the .NET ecosystem for its speed and cost-effectiveness (free). This update to the offline installer reinforces the commitment to supporting all developer environments, from open workstations to high-security labs. Download the latest version today to ensure your decompiling toolkit is up to date.
Since Telerik officially discontinued JustDecompile in 2023 and removed the standalone installer from their main downloads page, finding a "current" offline installer requires navigating the archive or using the community tools that have sprung up around it.
Here is a guide to obtaining and installing Telerik JustDecompile offline.