Hi. The user-agent of ie11 running on windows10 can not be parsed by "MSIE". This causes headers_in.msie to remain zero. source code location: https://github.com/nginx/nginx/blob/master/src/http/ngx_http_request.c#L1823 When I checked it, I found that it was possible to parse it with "rv:11.0". Is there any reason not to patch this? thanks. _____________________________by junghoonseo - Nginx Development