Arduino maintains a dedicated "Software Archive" page where all historical releases are available.
File details for verification:
Before you click the download button, you might wonder why you should choose the "Legacy" IDE over the newer version 2.0. Here are the key reasons:
Copy the libraries folder from Documents\Arduino to a safe location. Version 1.8.57 is unique because it does not automatically update libraries unless you ask it to—perfect for production stability.
If you prefer a USB-stick-friendly version that doesn’t touch the Windows Registry:
Choose Installation Directory – default is C:\Program Files (x86)\Arduino. It’s fine to leave as-is.
Click Install. The extraction and copy process takes about 30–60 seconds.
Driver Installation – a separate popup may ask to install Arduino USB drivers. Click Install (this allows your PC to recognize genuine Arduino boards).
Click Close when finished.
Once you have completed the download of Arduino IDE 1.8.57 for Windows, follow this guide.
Once the file has finished downloading, follow this installation guide.