Hi Eliezer, Thank you for your reply. I can give you the access.log entries while the video is getting played using vlc. Those are given below: 2013/09/17 10:40:30 427 192.168.102.80 TCP_MISS/206 548 GET http://10.102.78.163/Police_122.wmv - DIRECT/10.102.78.163 video/x-ms-wvx "VLC/2.0.7 LibVLC/2.0.7" 2013/09/17 10:40:31 405 192.168.102.80 TCP_MISS/200 6105 GET http://10.102.78.163/Police_122.wmv?MSWMExt=.asf - DIRECT/10.102.78.163 application/vnd.ms.wms-hdr.asfv1 "NSPlayer/7.10.0.3059" 2013/09/17 10:42:18 106960 192.168.102.80 TCP_MISS/200 1895949 GET http://10.102.78.163/Police_122.wmv?MSWMExt=.asf - DIRECT/10.102.78.163 application/x-mms-framed "NSPlayer/7.10.0.3059" 2013/09/17 10:42:18 255 192.168.102.80 TCP_MISS/200 6104 GET http://10.102.78.163/Police_122.wmv?MSWMExt=.asf - DIRECT/10.102.78.163 application/vnd.ms.wms-hdr.asfv1 "NSPlayer/7.10.0.3059" 2013/09/17 10:44:05 106625 192.168.102.80 TCP_MISS/200 1895948 GET http://10.102.78.163/Police_122.wmv?MSWMExt=.asf - DIRECT/10.102.78.163 application/x-mms-framed "NSPlayer/7.10.0.3059" I can't give you any url, because I was testing with my local windows media server. Can you please tell me the meaning of the following message? 2013/09/16 12:30:50| storeClientUnregister: store_client for http://10.102.78.163/Police_122.wmv?MSWMExt=.asf has a callback This message I found in cache log. I think this may be the reason. Susu -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Video-played-using-vlc-media-player-from-a-windows-media-server-in-not-getting-stored-in-cache-tp4662172p4662190.html Sent from the Squid - Users mailing list archive at Nabble.com.