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.
You can export an entire assembly (or just a namespace) to a Visual Studio project file (.csproj). The updated version preserves folder structure and resource files.
JustDecompile consistently produces human-readable C# code that often recompiles without errors. The updated version handles:
To install JustDecompile offline in 2024, avoid the Telerik website (it redirects elsewhere). Use Archive.org to find the last JustDecompile.msi or use the Icicle installer to bypass the retired server checks.
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
While Telerik JustDecompile was officially retired on April 2, 2024, many developers still rely on the offline installer to maintain legacy workflows. The tool remains free to use for those who have it, and "updated" versions found on third-party sites typically package the final stable build with modern extensions.
Below is a draft write-up highlighting why this tool remains a staple for .NET developers.
Telerik JustDecompile: The Essential .NET Decompiler (Offline Installer) telerik justdecompile offline installer updated
Telerik JustDecompile continues to be a high-performance, free tool for .NET developers needing to recover lost source code or examine external assemblies. The offline installer
is particularly valued for secure environment deployments where internet access is restricted. Key Features of the Updated Offline Installer: Extreme Performance:
Verified to be up to 10x faster than leading commercial decompilers, ensuring large assemblies load and decompile almost instantly. High Accuracy:
Seamlessly handles complex language features, including lambda expressions, generics, yield statements, and auto-generated properties. One-Click Project Creation: recreate a full Visual Studio project
from a decompiled assembly, saving hours of manual recovery work. Comprehensive File Support: Supports modern formats including (Windows 8/10 apps),
(WinRT metadata), and core framework assemblies from .NET 2.0 through 4.5+. Extensible Plugin System:
The updated installer supports popular community plugins like (for assembly editing) and (for deobfuscation). Enhanced Navigation:
Features "Find Usages" and "CamelCase" search, allowing you to pinpoint specific methods or types across multiple loaded assemblies simultaneously. Why Use the Offline Version? JustDecompile offline installer
(available as an MSI or ZIP) allows for a portable, "no-install" experience. Developers can run it directly from a USB drive or a local server, making it an ideal tool for troubleshooting on-site or in secured developer workstations. Recommended Alternatives:
If you require support for newer frameworks like .NET 8 or 9, Telerik recommends exploring other free tools like JetBrains dotPeek or the open-source narrow this down
for a specific use case, such as a software review or a download portal description? Telerik JustDecompile is Retired
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: including lambda expressions
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. telerik justdecompile offline installer updated
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.
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.
Here’s a concise review based on the query “Telerik JustDecompile offline installer updated”:
Many developers mistakenly download the online web installer. To get the true offline installer:
https://www.telerik.com/products/decompiler.aspx.JustDecompile_Offline_2025_1_211.exe.Pro Tip: If you have a Telerik account (even a free one), log in first. The offline installer is available without a paid license for the free version, but some advanced features (like plugin development) require a license key.