Deployment on IIS (Windows Server 2012): WebGL Setup failed

Hi all,

i tried to deploy my plotly application to an IIS (running under windows server 2012). Unfortunately, the graph is not shown and an error is logged out:

WARN: webgl setup failed possibly due to enabling preserveDrawingBuffer config. The device may not be supported by is-mobile module! Inverting preserveDrawingBuffer option in second attempt to create webgl scene.

as I figured out using the error page, I have to add some rewrites/mime types to my web.config. But it still doesn’t work after.

My web.config looks like this:

<?xml version="1.0" encoding="UTF-8"?>

<remove fileExtension=".mem" />
<mimeMap fileExtension=".mem" mimeType="application/octet-stream" />
<remove fileExtension=".data" />
<mimeMap fileExtension=".data" mimeType="application/octet-stream" />
<remove fileExtension=".memgz" />
<mimeMap fileExtension=".memgz" mimeType="application/octet-stream" />
<remove fileExtension=".datagz" />
<mimeMap fileExtension=".datagz" mimeType="application/octet-stream" />
<remove fileExtension=".unity3dgz" />
<mimeMap fileExtension=".unity3dgz" mimeType="application/octet-stream" />
<remove fileExtension=".jsgz" />
<mimeMap fileExtension=".jsgz" mimeType="application/x-javascript; charset=UTF-8" />

                        <rule name="Append gzip Content-Encoding header">
                            <match serverVariable="RESPONSE_Content-Encoding" pattern=".*" />
                                    <add input="{REQUEST_FILENAME}" pattern="\.unityweb$" />
                            <action type="Rewrite" value="gzip" />

Do you have any suggestions for handling this error/config problem?

Thanks in advance,