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How to protect Windows against ransomware
In This Article
Windows 10 andWindows 11have built-in ransomware protection, but it’s not enabled by default. Here’s what you need to know about using Controlled folder access.
Ransomware holds your files hostage byencryptingthem. Windows’ controlled folder access feature prevented any unauthorised application from modifying files in critical folders.
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The Short Version
Step1
Type “ransomware” into the search bar
Windows’ internal search is the fastest way to find most settings.
Step2
Click the Ransomware protection result
You can also navigate to the anti-ransomware settings via the Windows Security interface, but searching the fastest approach.
Step3
Enable Controlled folder access
The first heading on the Ransomware protection screen reads “Controlled folder access”, with an explanation and a switch below it. If the switch is set to off – coloured grey with the word “off” next to it, as in my screenshot – click on it.
Step4
Click yes
User Account Control will check in to make sure it was really you that requested the settings change. Click yes and you’re ready to go.
Controlled folder access will by default protect your Documents, Pictures, Videos, Music and Favourites folders from being changed by unauthorised applications. You can add new folders to the list by clicking the Protected folders link, and authorise new applications via the Allow an app through Controlled folder access link.
Troubleshooting
This is why Controlled folder access is disabled by default. While native Microsoft apps and those from some known legitimate software publishes are authorised by default, some false positives may occur. This this happens, open Ransomware protection as above, and click “Allow an app through Controlled folder access link”. You’ll be able to check recently blocked apps and browse for any app via the Add an allowed app button.
In the Ransomware protection settings, click the “Protected folders” link . You’ll be able to see all the folders currently protected, and add new ones via the Add a protected folder button. This is great for project folders from development or editing software. Just make sure you don’t go wild and add your entire hard disk, as many programs need to create and destroy files, especially temporary files, on a regular basis, and Controlled folder access is likely to interfere with this.
If you’ve linked your Microsoft OneDrive account to Windows, any files placed in OneDrive’s synced folders may be recoverable from the even if the copies on your hard disk are encrypted by ransomware.
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K.G. Orphanides is a writer and developer whose areas of expertise include internet security, VPNs, Linux for the desktop, small-scale game development, software preservation and computer audio techno…
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Founded in 2003, Trusted Reviews exists to give our readers thorough, unbiased and independent advice on what to buy.
Today, we have millions of users a month from around the world, and assess more than 1,000 products a year.
Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. To ensure this is possible, every member of the editorial staff follows a clear code of conduct.
We also expect our journalists to follow clear ethical standards in their work. Our staff members must strive for honesty and accuracy in everything they do. We follow the IPSO Editors’ code of practice to underpin these standards.
