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IE9 Running on Windows Server SKU can cause an exception to be thrown #224

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osbornm opened this issue Mar 17, 2011 · 9 comments
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IE9 Running on Windows Server SKU can cause an exception to be thrown #224

osbornm opened this issue Mar 17, 2011 · 9 comments
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Modernizr v2

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@osbornm
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osbornm commented Mar 17, 2011

If you are running IE9 on a windows server SKU without the "desktop experience" installed the "CanPlayType" method will throw a not implemented exception that will cause the modernizr script to fail.

Here is a simple repro that can be used on a machine running a default install of Windows Server 2008 R2 with IE9 RTM installed:

 <video id="video" />
 <script type="text/javascript">
    var v = document.getElementById("video");
    var ans = v.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"')
 </script>
@paulirish
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Eessh.

Can you file a ticket on IE's Connect website and report back here with the link?

Thanks!

@osbornm
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osbornm commented Mar 17, 2011

The Connect site for IE9 was closed after it RTM'd. I did however contact a PM on the IE9 team (I work on the ASP.NET MVC team) and I will fill you in more when I hear back from him. For now modernizr could wrap those calls in a try catch because if anything errors out I would expect it to just say no it isn't supported.

@osbornm
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osbornm commented Mar 24, 2011

Hey Paul,

This is a known issue for IE9.
http://msdn.microsoft.com/en-us/ie/ff959805.aspx says...
"On Windows Server 2008, you will need to enable the Desktop Experience feature prior to installing Internet Explorer 9 prerequisite KB2117917. Without enabling Desktop Experience, Internet Explorer 9 will not have HTML5 video and audio playback support.
For more information, see the following articles in the Microsoft Knowledge Base:
http://support.microsoft.com/kb/2117917"

It sounds like that the best bet for now would be for there to be a try catch block around this call and treat a exception as false.

@paulirish
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lol.

that is so effing weak.

aiight thanks for digging into that osbornm. I'll either document the problem or try/catch it.

@KuraFire
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I suggest both: try/catch it in the code and document it briefly in a comment around it, and then we'll include more detailed info in the full documentation. What a pain, IE9.

@paulirish
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i think #110 is a dupe of this one..

@grahf you can test out the version i'm about to land...

@osbornm
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osbornm commented May 20, 2011

Awesome thanks for getting this fix in. When is the time frame for the release of Modernizr 2? Do you have a date yet?

@paulirish
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Right now we're trying to get it out for Monday... :)

so if not then, then quite soon

@grahf
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grahf commented May 20, 2011

Looks like it works. Thanks.

@barryvan barryvan mentioned this issue Dec 22, 2011
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@cdeutsch cdeutsch mentioned this issue Jan 15, 2013
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ryanseddon added a commit that referenced this issue Oct 6, 2013
@ryanseddon
The video autoplay test will throw in IE9 and Safari 6 if either are …
11e99f4 
…missing

Desktop Experience feature or quicktime respectively. More info #224

* Wrapped the test in a try catch like it is in the video test.
josephsavona pushed a commit to josephsavona/SoundManager2 that referenced this issue Jan 20, 2014
@scottschiller
try...catch for dumb IE 9 Audio() "not implemented" error in server c…
f6b2c1d 
…ase without "desktop experience" installed, means missing HTML5 audio/video support. Hat tip: Modernizr/Modernizr#224
@spama spama mentioned this issue Mar 3, 2014
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patrickkettner pushed a commit to patrickkettner/Modernizr that referenced this issue Feb 22, 2015
@paulirish
try/catch'ing our audio/video tests, as IE9 likes to throw exceptions…
31c37fc 
… in some rare cases. details:

it seems that if you don't have the "Desktop Experience" installed, using elem.canPlayType()
will throw an exception. Awesome!

So we try/catch it. It's okay, they're cheap.

I'm doing a little bit of magic with an assignment inside my if() conditional. I hope nobody minds, too much.

Fixes Modernizr#224
patrickkettner pushed a commit to patrickkettner/Modernizr that referenced this issue Feb 22, 2015
@ryanseddon
The video autoplay test will throw in IE9 and Safari 6 if either are …
ced14a0 
…missing

Desktop Experience feature or quicktime respectively. More info Modernizr#224

* Wrapped the test in a try catch like it is in the video test.
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@KuraFire @paulirish @grahf @osbornm