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Can't watch Microsoft Virtual Academy videos

ianwhite

If our users try to watch a MVA videos, for example  https://mva.microsoft.com/en-US/training-courses/microsoft-intune-core-skills-11791?l=PAOcAgmEB_1104984382,  the loading 'spinner' appears for a long time before they are able to play the video, as if it is being  cached/scanned. However, looking at the UTM web filtering log (line below) seems to show that it is a streaming media and so should not be cached/inspected.

2016:07:26-13:38:10 xxxutma-1 httpproxy[31710]: id="0001" severity="info" sys="SecureWeb" sub="http" name="http access" action="pass" method="GET" srcip="xxx.xxx.xxx.xxx" dstip="2.16.9.34" user="xxx" group="" ad_domain="xxx" statuscode="200" cached="0" profile="REF_DefaultHTTPProfile (Default Web Filter Profile)" filteraction="REF_HttCffBasicFilte (Basic Filter)" size="68650" request="0xa8dac00" url="video.ch9.ms/.../732MSIntuneCoreSkillsM01_high.mp4" referer="" error="" authtime="52" dnstime="16367" cattime="139" avscantime="0" fullreqtime="40077" device="1" auth="2" ua="Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36" exceptions="" category="147" reputation="neutral" categoryname="Streaming Media" content-type="video/mp4"  

What is the problem and how can I fix this?

Thanks



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  • 0

    I did a quick test.  The UTM is sending back the file immediately - you can prove this in Wireshark if you want.  In FF and IE it seems the browser wants to download the file before playing it.  Chrome is happy to start playing the file immediately.  I think if you were not going through the UTM you would get the same behavior.

    authtime="52" dnstime="16367" cattime="139" avscantime="0" fullreqtime="40077"

    according to fullreqtime, 40 milliseconds were spent before it started giving back data.  You will see avscantime is 0.

  • 0 in reply to Michael Dunn

    Thanks again. I've tried IE, Edge  and  Chrome and all have a large delay starting when the proxy is enabled. with the proxy off they all start immediately.

    I'm new to this and wasn't aware of the meaning of the timing values you listed - I'll investigate further...

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  • 0 in reply to Michael Dunn

    Thanks again. I've tried IE, Edge  and  Chrome and all have a large delay starting when the proxy is enabled. with the proxy off they all start immediately.

    I'm new to this and wasn't aware of the meaning of the timing values you listed - I'll investigate further...

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