
Hi @Eaven HUANG
Edge on MacOS uses the system network proxy settings by default, just like the proxy settings in Windows.
If you want to set proxy settings for Edge only, you can use command-line options. You can refer to this doc about how to use Microsoft Edge command-line options to configure proxy settings.
If it still can't fix the issue, you can provide the detailed error message about the sites can't be accessed in Edge or any other information about the issue, so that we can have a deeper understanding of the issue.
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Regards,
Yu Zhou