Product image for illustration. You receive a digital licence key – no physical box or disc.
Avast · Antivirus
Avast Premium Security for Windows
No reviews yetAvast's most advanced security: antivirus, ransomware shield, fake-website protection, firewall and webcam protection.
- Real-time antivirus and anti-malware
- Ransomware shield
- Real Site protection against fake websites
- Advanced firewall (Windows)
$20.00 – $50.00
Keys are region-specific – choose the region where you will activate the product.
Maximum 3 keys per order.
- Availability
- Select version and location
- Multilingual
- Multilingual · Windows
- Support
- Our team replies within 24 hours – support@keymart.net
- Payment
- Visa, Mastercard, Amex, Apple Pay, Google Pay, PayPal
- Delivery
- Digital key, delivered by email after order check
Secure checkout
Encrypted payment, 3D Secure
Order check
Every order reviewed by a person
Refund protection
Full refund if your key doesn't activate
Real support
Our team replies within 24 hours
Description
Avast Premium Security protects your devices against viruses, ransomware, spyware and phishing. It checks websites before they load to block fake shops and bank pages, and its ransomware shield stops untrusted apps from changing your personal files.
On Windows you also get an advanced firewall, webcam protection, a sandbox for running suspicious files safely and a sensitive-data shield. Choose how many Windows PCs you want to protect: 1, 3, 5 or 10.
What's included
- Real-time antivirus and anti-malware
- Ransomware shield
- Real Site protection against fake websites
- Advanced firewall (Windows)
- Webcam and sensitive data protection (Windows)
- Sandbox for suspicious files (Windows)
Good to know
- Supported platforms: Windows.
- Region: buy the location matching where you will activate (US, EU, UK or Global).
- Delivery: every order is checked by our team; your key is then delivered by email and saved in your account.
- Starting prices from $20.00.
System requirements
- Windows 11 or 10, x86/x64 or ARM64
- RAM: 1 GB
- Storage: 2 GB free disk space
- Internet connection for activation and updates
Activation guide
- 1
Install Avast
Download and install the matching Avast product from avast.com.
- 2
Open the menu
Open Avast and go to ☰ Menu → “My subscriptions” (or “Enter activation code”).
- 3
Enter your code
Type or paste your activation code exactly as shown, including the dashes, and confirm.
- 4
Repeat on other devices
For multi-device plans, install Avast on each device and enter the same activation code.
Frequently asked questions
Single PC or multi-device?+
This edition is for Windows PCs – choose 1, 3, 5 or 10 PCs.
Can I upgrade from Avast Free?+
Yes. Install Avast Premium Security (or open your Avast Free app) and enter your activation code – the premium features unlock right away.
Customer reviews
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