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Editors' Review · July 24, 2025

Reliable and free antivirus protection for Windows

Bitdefender Antivirus Free for Windows offers a compelling security solution for users seeking robust and free-of-charge protection against evolving online threats. This lightweight application works silently in the background, shielding your PC from malware, ransomware, and phishing attempts without bogging down your system. For alternatives, Avast Free Antivirus is another popular option you can consider.

Leveraging award-winning technologies and AI-driven threat detection, Bitdefender Antivirus Free is designed to combat even the most sophisticated modern e-threats, including zero-day exploits and cryptojacking. It monitors your PC’s activity to instantly detect and isolate suspicious changes in real-time. 

Bitdefender Antivirus Free employs advanced, AI-powered technology to proactively identify and neutralize various digital dangers. It specializes in real-time detection, learning from your PC's unique activity patterns to spot and quarantine suspicious changes immediately. This comprehensive shield protects against prevalent threats like ransomware and cryptojacking. It also defends against sophisticated attacks such as AI-powered spearphishing, rootkits, Trojans, and malicious websites or files, including those embedded in NFTs.

Trusted digital shield

Light on CPU resources, this free antivirus program is engineered to operate silently without interfering with your workflow or other applications. It provides gentle notifications about detected threats, then recedes into the background, allowing you to browse, click, and download without constant interruptions. Its customizable daily virus scans are optimized to catch every threat efficiently while ensuring that your PC’s system performance remains unhindered.

Installing this application is straightforward. Simply download the program and follow the prompts to create a Bitdefender Central account. It works on most Windows versions, including Windows 10 and 11, and requires at least 2 GB of RAM. While highly effective, it lacks advanced tools like a built-in VPN or SafePay for secure online banking. Occasional upsell prompts for these upgrades can also be a minor inconvenience.

Is it the right choice?

While lacking some advanced functionalities found in its paid counterparts, Bitdefender Antivirus Free is still considered a top-tier cybersecurity solution for users seeking reliable, unobtrusive protection without a price tag. Its AI-driven threat detection, minimal system impact, and comprehensive defense against modern e-threats make it a preferred choice for everyday PC users. A highly recommended tool, it can keep your Windows device safe from threats and optimize its performance.

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Bitdefender Antivirus Free 0/4

Technical

Title
Bitdefender Antivirus Free 27.0.53.265 for Windows
Requirements
  • Windows 8
  • Windows 7
  • Windows XP
  • Windows 8.1
  • Windows Vista
Language
English
Available languages
  • German
  • English
  • Spanish
  • French
  • Italian
  • Portuguese
  • Dutch
  • Japanese
License
Free
Latest update
Author
Bitdefender
SHA-1
15802588a309b6bad6b1d9e9184525f02f70901e
Filename
Bitdefender_Antivirus_Free_V27.0.53.265.exe

Program available in other languages



Changelog

We don’t have any change log information yet for version 27.0.53.265 of Bitdefender Antivirus Free. Sometimes publishers take a little while to make this information available, so please check back in a few days to see if it has been updated.

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