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Made in Germany. Downloaded by millions. Rating: 4. Rating: 5 stars. I found Avira easy to install and am pleased with the protection it provides. Very easy to use. No guessing. The latest technologies. Antivirus Scanner Detects and blocks malware viruses, ransomware, banker trojans, etc. NightVision Our automated, intelligent learning system protects you against new and evolving threats. PUA Shield Identifies potentially unwanted applications hidden within legitimate software.

Safe Browsing Blocks harmful websites before they load. Ad Blocker Prevents intrusive and malicious ads, banners, and pop-ups from loading. Browser Tracking Blocker Stops companies from monitoring you online. Price Comparison Saves you money while you shop. Load more. Laptop, smartphone or tablet? Secure all your devices with Avira.

Discover Antivirus Pro for Mac and Windows. Install Avira Free Antivirus for Windows in 3 easy steps. Run the installer Double-click on the downloaded file. Confirm Click "Yes" on the dialog box to start your installation.

Follow the on-screen instructions This should take a few minutes only. System Requirements Your device is compatible. Free antivirus for Windows by Avira — Made in Germany. Why is antivirus software for Windows PCs important? Why is Windows Defender not enough to protect your system? How to get complete protection for your Windows device? How does Avira Free Security for Windows work? Avira Free Security: the best free antivirus for Windows Is Avira Free Security for Windows really free? Download the award-winning free antivirus for Windows Download for free Download for free.

Important: Your current Windows version is outdated and no longer supported. To manage global cookie preferences that apply to all websites you visit using Microsoft Edge, refer to the following article from Microsoft Support:. If you prefer to enable cookies only for the avast.

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To enable cookies for all websites that you visit using Opera, refer to the instructions under Manage cookies in pages in the following article from Opera help:. In rare cases, Avast Cleanup Premium or Avast Antivirus fails to load and displays one of the error messages below:. This issue may be the result of conflicts with Windows services configuration. Ensure that the relevant Windows services are set to run automatically, or reinstall the product by following the steps in this article.

If you still see the error message, refer to Further recommendations for additional troubleshooting steps. If the issue persists after following instructions in this article, we recommend you reinstall Avast Cleanup Premium. Follow the steps below:. If the issue persists after following the instructions in this article, we recommend you reinstall Avast Antivirus. USA English. Under Content , click JavaScript. If your computer does not have lots of memory or is already low in memory, this can affect the overall performance of the computer.

Today, most computers have plenty of memory. However, they can still encounter a system slow down as the antivirus scanner is scanning all files on the computer to see if they're infected. You can check if the antivirus program is scanning your computer, stop the scanning, and change when and how often the scanning should occur.

You may also be able to change how intrusive the scan is, in terms of how much memory it uses when scanning. Your antivirus program allows you to change when a scan is done i. As each antivirus program is different, general steps are provided below to help you change the scan frequency.