Yes. Running two real-time antivirus engines (e.g., McAfee + Kaspersky) causes conflicts, blue screens, and slowdowns. Windows Defender will disable itself automatically when KIS installs. For third-party AVs (Norton, Avast), uninstall them manually before running the KIS trial installer.
| Pros | Cons | | :--- | :--- | | 100% feature access for 30 days | Only 30 days – no lifetime trial | | No credit card required | Requires uninstalling old AV | | Easy to uninstall (clean removal tool) | No VPN or password manager included | | No malware-like pop-ups pushing purchases | May conflict with specific VPN clients | | Perfect for testing before buying | Cannot be extended on same PC | kaspersky internet security trial version
This article explores everything you need to know about the Kaspersky Internet Security trial version: how to get it, why you need it, what features you can test, and how to make the most of your 30-day window. For third-party AVs (Norton, Avast), uninstall them manually