Ransomware is a nightmare. It locks your photos and documents, and the hackers demand money to get them back. In 2026, it is one of the most common and devastating threats we see here in Adelaide.

The reality is that most people do not realise Windows has a built-in “shield” to protect their important folders. Even worse, this protection is usually turned off by default.

This guide shows you how to turn on Windows ransomware protection. We will also explain how to check your settings if you use a third-party antivirus program instead.

Use Controlled Folder Access for Windows 11 Ransomware Protection

Windows 11 includes a powerful tool called Controlled folder access. It acts like a digital bouncer for your most important files. It stops unauthorised apps or viruses from changing the files inside your Documents, Pictures, and other personal folders.

Here is how to turn it on:

1. Open the Start menu and type Windows Security, then press Enter.
2. Click on Virus & threat protection.
3. Scroll down to the bottom and click on Manage ransomware protection.
4. Switch the Controlled folder access button to On. You will need to confirm this action.

A Quick Warning: This tool is very strict. Sometimes, it might block a safe programme you are trying to use. If that happens, you will get a notification. You can click on the notification and select “Allow an app through Controlled folder access” to let your trusted software work normally.

What If You Use a Third-Party Antivirus?

Many people use security software from companies like Norton, McAfee, or Malwarebytes. If you use one of these, you might go looking for the Windows Controlled folder access setting and find it is greyed out or completely missing.

This is completely normal.

When you install a third-party antivirus programme, Windows automatically turns off its own Defender shields. It does this to prevent the two security systems from fighting each other and slowing down your computer.

This means your third-party software is now in charge of stopping ransomware.

You need to open your specific antivirus app and check its settings. Look for features named “Data Shield,” “Ransomware Protection,” or “Safe Files.” Make sure these switches are turned on. If you are paying for security software, you must ensure it is actively guarding your folders.

Why You Should Backup Even with Ransomware Protection

Security software is essential, but it is never perfect. Cybercriminals constantly create new ransomware that can sneak past both Windows Security and expensive third-party antivirus programmes.

If a new virus locks your files, a software shield cannot unlock them. The only absolute guarantee against losing your photos and documents is a separate copy of your data.

You should keep your files on a disconnected external hard drive or use a secure cloud storage service. Setting up a reliable data backup plan prevents total data loss if your computer is ever infected. It is the ultimate safety net for your digital life.

Get a Security Health Check in Adelaide

Ransomware protection is a must-have in 2026. It is not an optional extra anymore.

However, setting up all these shields and backups can be confusing. If you are not sure your computer is actually protected, we are here to help.

Computer Expert Adelaide offers full security audits to give you peace of mind. We will check your Windows settings, update your antivirus software, and make sure your personal data is truly safe from hackers.

Give us a call today to book your security health check and keep your files secure.