Yes, they do. Bitdefender offers a 30-day money-back guarantee on subscriptions, whether it’s a new one or a renewal. If ...

If Bitdefender fails to download Product Files on Windows 11/10, check internet connection, temporarily disable firewall, clear DNS cache, etc.

Head over to the Bitdefender's Free Edition home page (not to be confused with their premium offering) and download the software. Double-click on the installer to begin the installation process.