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Windows tip of the week

Run your web browser in an ultra-secure sandbox


By Ed Bott


One of the most common ways for attackers to break into your corporate network or to plant malware on an individual PC is with the help of a compromised website. You can foil those intrusion attempts by using a Windows 10 feature called Windows Defender Application Guard, which opens untrusted web pages in an isolated session that is completely separate from the host PC.


Application Guard requires Windows 10 Pro, Enterprise, or Education, and needs to be enabled from the Turn Windows Feature On Or Off dialog box. After completing that step, you'll see an additional option on the Settings And More menu (Alt + X) in Microsoft Edge. Click New Application Guard Window to open an isolated session.


By default, you can't save any data from that session, copy or paste using the Clipboard, or print files. To change those settings, go to Windows Security > App & Browser Control > Change Application Guard Settings (but note that doing so weakens the security of that sandbox).


What if you prefer a different browser? Beginning with Windows 10 version 1903, you'll be able to install extensions for Firefox and Chrome that will add Application Guard capabilities to those browsers, too.

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