Avast Internet Security 2027 | Windows

Avast Internet Security 2027

Avast Internet Security adds a firewall, anti-spam and a shield against ransomware to antivirus protection. You install the program, sign in once, and protection then runs quietly in the background.

You choose the term (1 year) and the number of devices (1 device, 3 devices, 5 devices, 10 devices) directly on this page. The term starts on activation, not on the date of purchase, and then ends automatically – there is no subscription to cancel. Supported platform: Windows.

What’s included in Avast Internet Security 2027

• Real-time antivirus protection
• Enhanced firewall
• Ransomware protection for important folders
• Anti-spam for desktop e-mail programs
• Real Site against fake websites
• Sandbox for suspicious programs

Who is Avast Internet Security 2027 for?

• Families who share PCs and laptops
• Home offices and small offices that use online banking
• Parents who want parental controls and time limits
• Users who often connect to public Wi-Fi

Term and devices

Avast compared

You will find more programs in the Avast category. For an overview of all manufacturers, see Antivirus.

Why good protection matters

At home and in the home office, online banking, shopping, dealings with public authorities and video calls all run on the same computer. That is why an internet security solution protects not only against viruses but also secures your connection to the internet and your webcam, and shields children from unsuitable content.

An example from practice

A family shares one laptop. The parents use it for online banking, the children do their homework on it. With parental controls, each child gets their own time limit, the firewall protects on café Wi-Fi and banking protection secures transfers.

Everyday tips

Good software is the foundation; a few habits make protection even more effective:

• Install updates for Windows, macOS and apps promptly.
• Only open attachments if you know the sender and are expecting the message.
• Never enter passwords via links in e-mails or text messages – open the website yourself instead.
• Use a separate password for every account and enable two-factor authentication wherever possible.
• Regularly back up important files to an external drive that is not permanently connected.

System requirements

• Operating system (Windows): Windows 10 or Windows 11
• Storage: about 1 to 3 GB of free space, depending on the platform
• Internet: required for activation and operation
• Account: free customer account with the manufacturer (Avast account)

The manufacturer lists the exact minimum versions on its website.

Installation and activation

1. Uninstall any other antivirus programs first so that they do not interfere with each other.
2. Sign in to your Avast account or create one there free of charge.
3. Enter the activation code from our e-mail in the account or in the program.
4. Download the program and start the installation.
5. Done. The term starts on activation.

Frequently asked questions about Avast Internet Security 2027

When does the term start?

When the code is activated, not on the date of purchase. So you can also redeem the code later.

Does the licence renew automatically?

No. The licence simply expires at the end of the term. To renew, buy a new code when needed.

What happens at the end of the term?

The program reminds you in good time. After that, the protection features are no longer active until you enter a new code. Your settings are kept.

Can I extend existing protection?

Usually yes: enter the new code in the same account. With most editions, the remaining term is carried over.

Can I use another antivirus program as well?

No, two antivirus programs running at the same time interfere with each other. Uninstall your old protection before installing.

Can I exchange the licence?

Yes, as long as the product key has not yet been redeemed or activated. Simply send us an e-mail.

Will I receive an invoice?

Yes, with VAT shown, with your company address on request.

Delivery, invoice and support

• Delivery by e-mail: you will usually receive the activation code and instructions within 5 to 30 minutes of payment (daily 09:00–21:00 CET). More under Shipping & payment.
• Invoice: every order comes with a proper invoice, with your company address on request.
• Origin of the licence: we source our licences from distributors and wholesalers in Europe. We explain exactly how this works on the page Buying legal software.
• Support: if you have questions about installation or activation, we help by e-mail (Mon–Sun 09:00–21:00 CET), phone (Mon–Fri 09:00–14:00 CET), live chat or remote support with TeamViewer.

Our goodwill promise

If the edition you ordered is ever no longer available, we will supply the next higher edition with the same term and number of devices at no extra charge. You never pay more than the price at which you ordered.