Proxy service is not available in edge‘s Application Guard window.

Question

When I'm using the Application Guard window in MIrosoft edge,I can't use the proxy service.I have set the system proxy, andd it works well in general and inprivate mode, but when I use the Application Guard window, it tells me that there may be something wrong with the proxy server, and I can't do change the browser's proxy settings.
Verison: 108.0.1462.54
Windows 11 professional
22621. 963
Windows Feature Experience Pack 1000.22638.1000.0

Answer 1

Hi @Yubaozhi ,

It seems that your proxy server does not have a symbolic name, only an IP address. Application Guard requires proxies to have a symbolic name, not just an IP address. For more information, please read: https://learn.microsoft.com/en-us/windows/security/threat-protection/microsoft-defender-application-guard/faq-md-app-guard#how-do-i-configure-microsoft-defender-application-guard-to-work-with-my-network-proxy--ip-literal-addresses--

UPDATE
To be more precise, Application Guard requires proxies to be specified by DNS or NetBIOS name rather than an IP address.
For example, "192.168.1.4:81" can be annotated as "itproxy:81". itproxy would be translated to 192.168.1.4 if there was an entry in the host's lmhosts file, a DNS entry on a DNS server, or a NetBIOS name on the network segment that resolves to itproxy (assuming NetBIOS is enabled). Then, you can use the "name" in Windows Proxy Settings.

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