Access https://central.bitdefender.com/ on web browser as a centralized location to manage your antivirus and firewall account all in one place. For those who need to download, install, and setup a central Bitdefender account, get the steps in the below guide. Find the steps to set up your antivirus account for Windows or Mac PC. Users who have already downloaded Bitdefender can sign in directly at Bitdefender central login How to Activate Bitdefender Central Account Via central.bitdefender.com? Before downloading and installing the antivirus, you will have to complete Bitdefender sign in to activate it. In order to activate the account, users can choose between different methods. Either click to activate the plan directly or on your own.