Always check the of the file after downloading from a third party. Right-click the installer > Properties > Digital Signatures . It should explicitly say "Progress Software Corporation" or "Telerik AD." Key Features of JustDecompile
Here is everything you need to know about getting the JustDecompile offline installer and why it’s the preferred choice for many developers. Why Use a Telerik JustDecompile Offline Installer?
Check the settings to "Download installers locally." This will save the full offline setup file to your computer. What if I Can’t Access the Telerik Account?