Look for the file named something like:
: You can recreate a complete Visual Studio project from a decompiled assembly, ensuring code is never truly lost.
JustDecompile requires the standard .NET Framework to run its UI. If you are installing on a completely fresh Windows Server or an older Windows client machine, ensure you have the appropriate .NET Runtime pre-installed offline. telerik justdecompile offline installer updated
Replace any legacy command-line calls pointing to JustDecompile.cmd with ILSpy's command-line tool ( rcat or ilspycmd ).
Because offline environments lack the ability to pull missing files from the cloud, you may occasionally run into setup hurdles. Here is how to fix them: Missing .NET Runtime Errors Look for the file named something like: :
Once complete, launch JustDecompile. You may be asked to register with a Telerik account, but offline usage is supported after initial registration or activation in many cases. New Features and Updates in 2026
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. You may be asked to register with a
Ensure the file version listed is the most recent update for 2026. Installation Steps (Offline Method)
Edit assemblies directly inside the tool easily.
You can archive the specific version of the installer to ensure all developers on a team are using the same version, avoiding "it works on my machine" issues.