Internet Explorer uses the IPConfigure Embedded Media Player to stream directly from the cameras. It also uses Windows Media Services to render playback of the archived video.
There is the option to force Silverlight throughout Internet Explorer from the management server.
1. From the management server, navigate to the website root (where you installed ESM defaults to C:\ipconfigure\ipConfigure\)
2. Open the web.config file with notepad.
<add key="ForceSilverlight" value="False"/>
4. Change it to:
<add key="ForceSilverlight" value="True"/>
Please note the following Silverlight limitations when considering this change: https://ipconfigure.zendesk.com/hc/en-us/articles/201141609-Silverlight-Limitations