Error: "Duo Desktop needs permission to access your local network" in Google Chrome/Microsoft Edge

New versions of Google Chrome (142) and Microsoft Edge (143) added a security feature that may block how Duo Desktop talks to your browser. When this happens, you may see a message asking for permission to access your local network. If permission is not given, Duo may not check your device for security information. This article explains what is happening and how to fix it.

Detailed Information

Duo Desktop needs to talk to your browser using a “loopback” connection. This is a normal, safe way for your computer to talk to itself. Chrome and Edge now ask for your approval before they allow this connection. If you do not allow it, Duo cannot check your device for security health.

For more information, please read the official Duo support document found here: Guide to Google Chrome 142 and Microsoft Edge 143 changes affecting Duo Desktop (External Link)

Instructions

Recommended Method: Skip for now

The easiest fix is to click Skip for now on the message. This lets you continue logging in. Your browser will remember this choice until you clear your cookies or cache.

Advanced Method: Change Browser Settings

Only use these steps if you want Duo to always have permission on this computer.

Google Chrome

1. In Chrome, select the three vertically stacked dots in the upper right to bring up Chrome’s menu.
2. Near the bottom of the menu, select Settings.
3. From the Settings list, select Privacy and security.
4. Underneath Privacy and Security options, select Site settings.
5. At the bottom of the Permissions section, in the middle of the page, select Additional Permissions > Local network access.
6. Next to Allowed to connect to any device on your local network, select Add.
7. In the text box that appears, enter [*.]duosecurity.com.

Note: If you cannot click the option, your browser is controlled by your organization and cannot be changed.

Microsoft Edge

1. Navigate directly to edge://flags/#local-network-access-check and set it to Enabled. 
2. Click the Restart button to relaunch Edge with this updated setting.
3. Navigate to edge://settings/privacy/sitePermissions/allPermissions. Scroll down to and click the Local Network Access setting.
4. Click the Add site button to the right of Allowed to connect to any device on your local network.
5. In the text box that appears, enter [*.]duosecurity.com.

Note: If the box is locked, your browser is controlled by your organization and cannot be changed.

Environment

• Google Chrome version 142 or later
• Microsoft Edge version 143 or later
• Unmanaged devices