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Windows tip of the week

Protect your data files from ransomware with Controlled Folder Access


By Ed Bott


Beginning in version 1709, Windows 10 includes a feature designed to protect your files from being forcibly encrypted by ransomware. Controlled Folder Access prevents any unknown (and therefore untrusted) program from adding or changing files stored in designated folders. The feature is off by default. Here's how to turn it on.


Using an administrator account, open the Windows Security app (in Windows 10 versions before 1809, this is called Windows Defender Security Center). Click the Virus & Threat Protection tab and then click Manage Ransomware Protection.


Slide the Controlled Folder Access switch to On. That enables two additional options that's you'll want to inspect and, if necessary, adjust.


Click Protected Folders to see the full list of folders that are monitored by Controlled Folder Access. By default, this includes the primary folders (Documents, Pictures, Videos, Music, and Desktop) in both your user profile and the Public profile. Click Add A Protected Folder to include other locations that aren't backed up to the cloud.


Under Allow An App Through Controlled Folder Access, you can manually add programs to the trusted list, although it's easier to add these programs individually in response to warnings from Windows.

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