Microsoft Edge's Built-in VPN: What You Need to Know About Its Limits

Microsoft Edge ships with a built-in VPN feature designed to secure your internet connection, but new insights suggest it may not offer the comprehensive protection many users assume. According to a report by PCWorld, US security researcher Sooraj Sathyanarayanan has highlighted significant limitations in how the browser’s VPN operates, particularly regarding the scope of encrypted traffic.

While the feature is useful for privacy on public networks, it is not a replacement for a full-device VPN solution. Understanding its boundaries is crucial for users who rely on it for security.

A close-up of a smartphone screen showing a Wi-Fi security warning icon, with a hand holding the device in a crowded cof — Public Wi-Fi networks are where Edge's VPN is most useful, but it only protects browser traffic.

The Scope of Protection

The primary limitation of the Microsoft Edge VPN is that it only encrypts traffic generated by the browser itself. This means that while your web browsing activity is secured within an encrypted tunnel, other data leaving your PC remains exposed.

For instance, emails sent through a desktop email client, DNS queries initiated by Windows, and operating system updates are not routed through the VPN. If you are using Edge’s VPN to protect sensitive data from eavesdropping on a public Wi-Fi network, you may have a false sense of security if other applications are transmitting data in plaintext.

Default Activation Rules

By default, Edge’s VPN does not run constantly. It is designed to activate only under specific conditions to balance privacy with performance and data usage. The VPN turns on automatically when you connect to an unsecured Wi-Fi network or when you visit a website that uses unencrypted HTTP.

This conditional activation is a sensible default for most users, as it avoids unnecessary data consumption on trusted home networks. However, it means that if you are on a secure network but visiting an HTTP site, the VPN will engage, but it will not protect your other applications.

A minimalist illustration of a data cap gauge hitting its limit, with binary code flowing into a blocked pipe, symbolizi — The free VPN includes a 5GB monthly data allowance that can be depleted quickly with heavy usage.

How to Enable Full Browser Protection

If you wish to maximize the protection offered by Edge’s VPN, you can change the settings to route all website traffic through the secure network, regardless of the Wi-Fi security status. This ensures that every HTTP and HTTPS request from the browser is encrypted.

To make this change, follow these steps:

Click the gear icon in the bottom-right corner of the Edge browser to open Settings.
Navigate to Privacy, Search, and Services in the left sidebar.
Select Security from the submenu.
Scroll down to the Secure Microsoft Edge Network section.
Toggle the switch for Use Secure Microsoft Edge Network to On.
Below the toggle, select the All Websites option.

Once enabled, Edge will route traffic from all websites through the VPN, providing consistent encryption for your browsing activity.

The Data Cap Reality

A critical factor to consider is the monthly data allowance. The free version of Edge’s VPN includes a 5GB data limit per month. While this may be sufficient for light browsing, it can be exhausted quickly if you use the VPN for streaming video, downloading large files, or if you enable the “All Websites” setting on a high-traffic connection.

Once you exceed the 5GB limit, the VPN functionality will stop until the next billing cycle. For users who rely heavily on the browser for media consumption or large downloads, this cap may make the feature impractical for daily use.

What This Means for You

For most users browsing from a trusted home network, Edge’s VPN is likely unnecessary, as your home router and ISP already provide a baseline of security. However, if you frequently use public Wi-Fi for sensitive tasks, enabling the VPN for all websites can add a layer of protection for your browser data.

It is important to recognize that Edge’s VPN is a browser-level tool, not a system-wide solution. If you require protection for all device traffic, including email clients and system updates, you will need a dedicated VPN service. Providers like CyberGhost or NordVPN offer full-device encryption, ensuring that all data leaving your PC is secured, regardless of the application generating it.

In summary, while the built-in VPN is a convenient feature for quick privacy boosts, it has distinct limitations. Users should adjust the settings to match their security needs and be mindful of the data cap to avoid unexpected interruptions.

Source: PCWorld

Over to you: Do you use Edge’s built-in VPN on public Wi-Fi, or do you prefer a dedicated third-party service for full protection?