Regarding the year 2038, I assume you're referring to the fact that some software products might have issues with dates beyond 2038 (similar to the Y2K problem). Rest assured that Avast, like many other modern software vendors, has addressed these issues, and their products, including Avast Free Antivirus, are designed to handle dates beyond 2038 without any problems.
Create a free Avast account. By signing in, your "license" is linked to your email. This ensures that even if you move to a new computer, your free protection remains active without needing to hunt for a 20-digit code. Why You Should Avoid Unofficial Keys avast free antivirus license key 2038 new
Only download the installer from the official Avast website. Regarding the year 2038, I assume you're referring