# Wowzaplayer problem

**URL:** <https://community.wowza.com/t/wowzaplayer-problem/52431>\
**Category:** Wowza Developer Dojo\
**Created:** [December 5, 2018, 6:01pm UTC](https://community.wowza.com/t/wowzaplayer-problem/52431 "2018-12-05T18:01:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![joey\_li](https://avatars.discourse-cdn.com/v4/letter/j/6a8cbe/32.png) [@joey\_li](https://community.wowza.com/u/joey_li)\
**Post date:** [December 5, 2018, 6:01pm UTC](https://community.wowza.com/t/wowzaplayer-problem/52431/1 "2018-12-05T18:01:23Z")

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A problem occurs occasionally when i want to play vod by wowzaplayer. Here is my error infomation:

00:00:00.000 INFO: Log: Log times are relative. Starting at UTC: 1543978028548  
wowzaplayer.js:5 00:00:00.000 INFO: AssetPlayerBase: Wowza Player 1.1.13 build:8743 (javascript)  
wowzaplayer.js:5 00:00:00.002 INFO: AssetPlayerBase: License Key: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX-XXXXX  
wowzaplayer.js:5 00:00:00.004 INFO: AssetPlayerBase: init  
wowzaplayer.js:5 00:00:00.033 INFO: AssetPlayerBase: prepare  
wowzaplayer.js:5 00:00:00.035 ERROR: PlayerStreamerBase: fatal error msg:Media Source Extensions unavailable err:null  
wowzaplayer.js:5 00:00:00.035 WARN: AssetPlayerBase: Error occurred: Media Source Extensions unavailable

ps: I am using an Engine trial for test.

so, how can i figure it out ?

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**Author:** ![Rose\_Power-Wowza\_Com](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/rose_power-wowza_com/32/431_2.png) [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Post date:** [December 6, 2018, 4:16pm UTC](https://community.wowza.com/t/wowzaplayer-problem/52431/2 "2018-12-06T16:16:56Z")

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Hello @joey li, sorry you are having an issue. The best approach to a resolution is to have our engineers take a look at your configuration and run some tests. Even though you have a trial, you can still submit a support ticket and receive assistance:

[https://www.wowza.com/support/open-ticket](https://www.wowza.com/support/open-ticket)

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**Author:** ![Alberto\_Cabaleiro](https://avatars.discourse-cdn.com/v4/letter/a/a9adbd/32.png) [@Alberto\_Cabaleiro](https://community.wowza.com/u/Alberto_Cabaleiro)\
**Post date:** [July 25, 2019, 8:55am UTC](https://community.wowza.com/t/wowzaplayer-problem/52431/3 "2019-07-25T08:55:32Z")

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Hello,

Usually, media source extensions errors happen if a client is using Internet Explorer 11 on Windows 7 to play back content using our Wowza Player and does not have Flash installed on their computer. IE 11 on Windows 7 does not support Media Source Extensions and must use Flash to decode H.264 content. We have a detailed description of which browsers and operating systems support Media Source Extensions here: [https://www.wowza.com/blog/the-current-state-of-media-source-extensions](https://www.wowza.com/blog/the-current-state-of-media-source-extensions)

Kind regards,

Alberto Cabaleiro

Wowza Support Engineer