Download Bitdefender 2021-2022 Virus Definitions December 22, 2022 Download

The following update works for Bitdefender Total Security, Bitdefender Internet Security and Bitdefender Antivirus 2021-2022 and beyond. If you are looking for the later versions of Bitdefender (2010, 2009 or 2008) please go here or Bitdefender (2011, 2012 or 2013) please go here.

To update Bitdefender using weekly.exe, follow these steps:

1. Download the file for the system and save it locally on your hard drive.
2. Double-click the downloaded file to start the setup wizard.
3. Click Next to start the installation process.
4. Tick ​​I accept the terms of the license agreement and click Next.
5. Click Install to begin the installation.
6. Click Finish to close the installation wizard.