Merlin
Application Guard Extension

Application Guard Extension

View untrusted websites in a separate Microsoft Edge browsing window to help protect your device from advanced threats.

What is Application Guard Extension?
Application Guard Extension is a Firefox add-on developed by Microsoft. It aims to protect the device from advanced threats by directing untrusted websites to a separate, isolated version of Microsoft Edge. This safeguard ensures that any potential malicious sites remain within a secure container, thereby preserving the security of your device. This extension is compatible with latest Windows 10 versions (Professional, Enterprise, Education); however, automatic redirection of untrusted sites is not available in an unmanaged environment.
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Merlin
Stats
Rating: 3.05 (22)
Version: 2.0.2206.23003 (Last updated: 2022-11-14)
Creation date: 2019-02-26
Weekly download count: 75
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • nativeMessaging
  • tabs
  • webRequest
  • history
  • webRequestBlocking
  • storage
  • <all_urls>
Size: 813.11K
Stats date:

Chrome-Stats Rank

# 1848 ▲ 1
Other rankings
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Other platforms

Application Guard Extension
Application Guard Extension (v2.0.2206.23003)
3.03 (29) 10,000
Not available on Edge
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Merlin
Summary
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Microsoft Defender Application Guard Extension protects your device from advanced attacks by redirecting untrusted websites to an isolated version of the Microsoft Edge browser. If an untrusted website turns out to be malicious, it remains within Application Guard's secure container, keeping your device protected.

Microsoft Defender Application Guard Extension works with the following editions of Windows 10, version 1803 with latest updates or later:

Windows 10 Professional
Windows 10 Enterprise
Windows 10 Education

NOTE: If you're using Windows 10 in an unmanaged environment, you can use this extension to manually open untrusted websites in an isolated Application Guard session, but untrusted websites will not be redirected automatically.

By installing this extension, you agree to the Microsoft License Terms below.

https://go.microsoft.com/fwlink/?linkid=2038109

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • In other browsers, it enhances security by requiring additional security applications on Windows
  • Some users appreciate the capability and have been using it for years across various browsers
  • One user finds it amazing
Cons
  • Does not work in Firefox with some users getting 'incompatible device' errors
  • Lack of updates since August 13, 2020
  • Some users experience functionality issues, as it doesn't open on pressing the button
  • Accusations of link hijacking and forcing users into Microsoft Edge
  • Considered by some as spyware to track web usage
Most mentioned
  • Compatibility issues with Firefox
  • Forces or encourages use of Microsoft Edge
  • Lack of recent updates
  • Potential security features requiring Windows security applications
  • Issues with the extension not functioning as expected
Recent reviews
Nem működik a Firefox-ban, nem tudom miért nem office-ban igen, Chrome-ban igen, Firefox-ban nem! "Nem kompatibilis eszköz" -t ír! A "böngészőjét szervezete felügyeli" jelen van az edge-ben és Chrome-ban is nem tudom az okát (win11).
by Tárnoki Csaba, 2024-02-24
View all user reviews
Safety
Risk impact

Application Guard Extension is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Application Guard Extension if you trust the publisher.

Risk likelihood

Application Guard Extension has earned a fairly good reputation and likely can be trusted.

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Screenshots
Application Guard Extension Application Guard Extension