Many of the best antivirus software packages have auto-update features, so updated files and patches are downloaded to your computer when available. Here’s a look at the auto-update features in the top antivirus programs so you can make sure your computer is continuously protected.

AVG Antivirus

AVG offers a free product, AVG AntiVirus Free, and a paid product with broader protection, AVG Internet Security. With both versions, automatic updates should be enabled by default, but it’s important to make sure. Here’s how to manage automatic updates with AVG.

Avast Antivirus

Avast keeps its virus definitions up to date regularly, as well as other application features. Automatic updates should be enabled by default, but it’s important to make sure. Here’s how to manage automatic updates with all Avast antivirus products.

Malwarebytes

Malwarebytes for Windows automatically performs database updates and scans. If it doesn’t update or scan automatically, make sure the settings are configured correctly.

Bitdefender

Bitdefender subscriptions include automatic updates of the application and cyberthreat protection tools. When your computer is offline, your internet connection is too slow, or your computer doesn’t have internet access, you can download updates manually to a computer with internet access and then transfer the updates to your offline computer with a removable device. Here’s how:

Kaspersky

By default, Kaspersky updates every two hours automatically. You can also run a manual update anytime.