Microsoft has introduced a new feature called ‘Controlled folder access’ to Windows Defender that protects users’ valuable data from malicious apps and threats.This new feature essentially monitors the changes that apps make to files in certain folders that are protected. If an app is blacklisted and tries to make changes to files in the protected folders, the user will get a notification about the attempt.
Sensing the growing threat of ransomware and other malicious attacks Microsoft has added this feature to Windows Defender security center with the build 16232. So if you are the member of insider and have at least the build 16232 then you can Enable Controlled Folder Access in Windows 10.
To enable this extra protection, open Windows Defender Security Center and then select Virus & threat protection settings.
Next, select Virus & threat protection settings.
On the next page, click the Virus & threat protection settings link.
Enable the option Controlled folder access.
If prompted by UAC, confirm the operation.
Now, click the Protected folders link below the Controlled folder access category.
On the next page, click the button + Add a protected folder.
Browse for the folder you want to protect with Controlled Folder Access. It will be added to the list of folders as shown below.
You can also choose which apps are allowed to access protected folders. Just click the Allow an app through Controlled folder access link and then click Add an allowed app. Then browse to the app’s executable file that you want to let through.On the next page, click the button + Add an allowed app.
Browse for the executable file of the app which will have access to the folder.
You are done. Now, only the selected apps will have access to the folder protected by the Controlled folder access feature. If some other app will try to modify files in the protected folder, a notification will appear.