Will the PC’s performance be impacted during a scan ?

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The disadvantage, on the other hand, is the high demand for hard disk space (996 MB), even if you don’t have to accept any noticeable effects on system performance. Downloading and installing the software does not cause any problems, its operation is simple and not complicated. So if you don’t mind the bright colors of the user interface, you’re in good hands here. Only Avast’s support could be even better, there is no telephone or e-mail help. However, Avast has summarized the most frequently asked questions in an FAQ on the product’s website.

Conclusion: Avast Internet Security is a good program with an integrated firewall and is definitely one of the better products in our Internet security comparison.

I have to before the installation uninstall the old Avast version after the new version?

That depends. If the Avast 7.x version is installed, you do not need to un phone number library install it. However, if Avast 6.x or lower is installed, you must first remove the version from the device using the Avast Uninstaller.


In general, a scan hardly affects the system performance. However, if you run multiple scans at the same time, there may be a slight interference.

Can I disable Windows Firewall when using Avast Firewall?

Yes, you can. The Avast Firewall simply takes over the work of the Windows Firewall and monitors network traffic between your PC and the outside world.

What operating systems is Avast Internet Security compatible with?

You can use Avast Internet Security on both your Windows PC and Mac, as well as on Android phones.