wine-wine/dlls/mf/mf.rgs

HKLM
{
    NoRemove 'Software'
    {
        NoRemove 'Microsoft'
        {
            NoRemove 'Windows Media Foundation'
            {
                NoRemove 'SchemeHandlers'
                {
                    'file:'
                    {
                        val '{477ec299-1421-4bdd-971f-7ccb933f21ad}' = s 'File Scheme Handler'
                    }
                }
            }
        }
    }
}