en-US

CORS non-wildcard request header support enabled

Supported on: Microsoft Edge version 97, Windows 7 or later

Registry

HKLM Software\Policies\Microsoft\Edge
HKCU Software\Policies\Microsoft\Edge

Value name: CORSNonWildcardRequestHeadersSupport

Enabled: CORSNonWildcardRequestHeadersSupport = 1

Disabled: CORSNonWildcardRequestHeadersSupport = 0

Description

This policy lets you configure support for CORS non-wildcard request headers. Microsoft Edge version 97 introduces support for CORS non-wildcard request headers. When a script makes a cross-origin network request via fetch() and XMLHttpRequest with a script-added Authorization header, the header is explicitly allowed by the Access-Control-Allow-Headers header in the CORS preflight response. "Explicitly" here means that the wild card symbol "*" doesn't cover the Authorization header. For more information, see https://go.microsoft.com/fwlink/?linkid=2180022. If you enable or don't configure the policy, Microsoft Edge supports the CORS non-wildcard request headers and behaves as previously described. If you disable this policy, Microsoft Edge allows the wildcard symbol ("*") in the Access-Control-Allow-Headers header in the CORS preflight response to cover the Authorization header. This policy is a temporary workaround for the new CORS non-wildcard request header feature. It's planned to be removed in the future.