Computer Configuration > Administrative Templates > Microsoft Edge
Both
HKLM\Software\Policies\Microsoft\Edge
OBSOLETE: This policy is obsolete and doesn't work after Microsoft Edge 98. Specifies whether WebAssembly modules can be sent to another window or worker cross-origin. Cross-origin WebAssembly module sharing was deprecated as part of the efforts to deprecate document.domain, see https://github.com/mikewest/deprecating-document-domain. This policy allowed re-enabling of cross-origin WebAssembly module sharing. This policy is obsolete because it was intended to offer a longer transition period in the deprecation process. If you enable this policy, sites can send WebAssembly modules cross-origin without restrictions. If you disable or don't configure this policy, sites can only send WebAssembly modules to windows and workers in the same origin.