Windows 11 comes with a powerful suite of security tools built in — but many of them are either disabled by default or not configured to their full potential. Enabling the right features takes less than an hour and significantly reduces your exposure to malware, ransomware, data theft, and unauthorised access. Here is a comprehensive guide to the security features you should activate right now.
Several of the most important features described here are exclusive to Windows 11 Pro. If you are still running Windows 11 Home, it is worth considering an upgrade — Windows 11 Pro is available at GetRenewedTech for just €21.99.
1. Enable BitLocker Drive Encryption
BitLocker is the single most important security feature in Windows 11 Pro. It encrypts your entire drive, meaning that if your laptop is lost or stolen, the thief cannot read your files — even if they remove the drive and plug it into another computer.
To enable it: open the Start menu and search for BitLocker, then open Manage BitLocker. Select your system drive (usually C:) and click Turn On BitLocker. You will be asked to save a recovery key — do this by printing it or saving it to your Microsoft account. Do not skip this step.
BitLocker works silently in the background once enabled; you will not notice any performance impact in normal day-to-day use. What you will have is peace of mind knowing your data is protected even in worst-case scenarios.
2. Run Windows Security Centre and Fix All Alerts
Open Windows Security from the Start menu (or search for it). This is your central dashboard for all security health indicators. Address every item marked in red or yellow before continuing. Specifically ensure that:
- Virus & threat protection is active and up to date
- Real-time protection is switched on
- Network firewall is enabled for all profiles (Domain, Private, and Public)
- No pending security actions are awaiting your attention
3. Enable Controlled Folder Access (Ransomware Protection)
Ransomware encrypts your files and demands payment to restore access. Windows 11 has a built-in defence against this called Controlled Folder Access, but it is switched off by default.
To enable it: open Windows Security > Virus & Threat Protection > Ransomware Protection. Toggle Controlled Folder Access on. This prevents unauthorised applications from making changes to your Documents, Pictures, Desktop, and other important folders.
When you first enable this, you may receive prompts to allow trusted applications access. Follow these prompts to whitelist software you trust, then leave Controlled Folder Access running permanently.
4. Configure Windows Defender SmartScreen
SmartScreen checks apps and files you download against a database of known malicious content. It is enabled by default but worth confirming. Go to Windows Security > App & Browser Control and ensure that both Check Apps and Files and SmartScreen for Microsoft Edge are set to Warn or Block.
Also enable Potentially Unwanted App Blocking on the same page. This prevents the installation of adware, browser toolbars, and other unwanted software that often comes bundled with free applications.
5. Activate Core Isolation and Memory Integrity
Memory Integrity (also called Hypervisor-Protected Code Integrity, or HVCI) prevents malicious code from inserting itself into high-security processes. It uses virtualisation to isolate core system processes from the rest of the operating system.
Find it at Windows Security > Device Security > Core Isolation Details. Toggle Memory Integrity on and restart your computer. Note that on older hardware or with some legacy drivers, this may cause compatibility issues — if your PC becomes unstable after enabling it, you can turn it off again.
6. Review App Permissions
Modern apps request access to your camera, microphone, location, and other sensitive resources. It is worth auditing what has been granted. Go to Settings > Privacy & Security and work through each category: Camera, Microphone, Location, Contacts, and so on.
Revoke permissions for any app that does not genuinely need them. A photo editing app has no legitimate reason to access your microphone, for example. This audit takes about ten minutes and often reveals permissions granted long ago that you have since forgotten.
7. Enable Two-Factor Authentication on Your Microsoft Account
Your Microsoft account is the key to your Windows sign-in, OneDrive files, and potentially your email. Protecting it with two-factor authentication (2FA) ensures that even if someone obtains your password, they cannot log in without also having access to your phone.
Visit account.microsoft.com/security and enable two-step verification. The Microsoft Authenticator app makes this seamless — after entering your password, you simply approve a push notification on your phone.
8. Use Windows Hello for Sign-In
Windows Hello replaces your password with biometric authentication — facial recognition or fingerprint, depending on your hardware. It is more secure than a password (which can be guessed or stolen) and faster to use daily.
Set it up at Settings > Accounts > Sign-In Options. If your device has a compatible camera or fingerprint reader, you can configure Windows Hello there. Even if you do not have biometric hardware, you can use a PIN — which is still more secure than a long password because it is tied to your specific device and cannot be used remotely.
9. Configure the Windows Firewall Properly
The built-in firewall is active by default, but Pro users can configure advanced inbound and outbound rules via Windows Defender Firewall with Advanced Security (search for it in the Start menu). For most users, the default settings are adequate, but check that:
- The firewall is active for Private, Public, and Domain profiles
- You have not disabled it for any profile previously
- You review outbound rules if you want to control which apps can access the internet
10. Check for Updates and Keep Them Current
Security patches are released regularly, and running an outdated system is one of the easiest ways to become a target. Go to Settings > Windows Update and check for updates immediately. Enable automatic updates if they are not already on.
Windows 11 Pro users can use Windows Update for Business to defer feature updates whilst still receiving security patches promptly — a sensible balance between stability and protection.
Building a Secure Setup from the Ground Up
The features above are all built into Windows 11 Pro at no extra cost. Taking an hour to enable and configure them properly gives you a substantially more resilient system. The most important steps are BitLocker for data protection, Controlled Folder Access for ransomware defence, and two-factor authentication on your Microsoft account — together, these three measures address the most common attack vectors facing home and small business users.
If you are yet to upgrade to Windows 11 Pro, now is the time. GetRenewedTech offers Windows 11 Pro for €21.99, making professional-grade security accessible to everyone.
