Allow local MHTML files to open automatically in Internet Explorer mode
Supported on: Microsoft Edge version 107, Windows 7 or later
Registry
Software\Policies\Microsoft\Edge Software\Policies\Microsoft\Edge Value name: InternetExplorerIntegrationLocalMhtFileAllowed
Enabled: InternetExplorerIntegrationLocalMhtFileAllowed = 1
Disabled: InternetExplorerIntegrationLocalMhtFileAllowed = 0
Description
This policy controls whether local mht or mhtml files launched from the command line open automatically in Internet Explorer mode based on the file content without specifying the --ie-mode-file-url command line. This setting works when 'InternetExplorerIntegrationLevel' (Configure Internet Explorer integration) is set to 'IEMode' and 'InternetExplorerIntegrationLocalFileAllowed' (Allow launching of local files in Internet Explorer mode) is enabled or not configured. If you enable or don't configure this policy, local mht or mhtml files launch in Microsoft Edge or Internet Explorer mode. Then, you can view these files in the best way. If you disable this policy, local mht or mhtml files launch in Microsoft Edge. If you use the --ie-mode-file-url command line argument for launching local mht or mhtml files, it takes precedence over how you configured this policy. To learn more about Internet Explorer mode, see https://go.microsoft.com/fwlink/?linkid=2094210