Configure list of allowed authentication servers
Supported on: Microsoft Edge version 77, Windows 7 or later
Registry
HKLM
Software\Policies\Microsoft\Edge HKCU
Software\Policies\Microsoft\Edge Options
AuthServerAllowlist text Description
Specifies which servers to enable for integrated authentication. Integrated authentication is only enabled when Microsoft Edge receives an authentication challenge from a proxy or from a server in this list. Separate multiple server names with commas. Wildcards (*) are allowed. If you don't configure this policy, Microsoft Edge tries to detect if a server is on the intranet - only then does it respond to IWA requests. If the server is on the internet, IWA requests from it are ignored by Microsoft Edge. Example value: *contoso.com,contoso.com