I've noticed that any page that I create that has a radcaptcha on it, causes the warning in Internet Explorer saying "The webpage wants to run the following add-on: 'Windows Media Player' from 'Microsoft Corporation'.

Once you've accepted this once, it doesnt come up again on the client IE browser.  Of course, this warning doesn't pop up in Chrome of FireFox.

Does anyone have any thoughts on this issue, or am I basically screwed for people that use IE (that is, they have to accept the warning - something that I'm worried may scare people away if they see that come up)?

Thanks.

Hello Mike,

Have you enabled the captcha audio feature as shown in this online demo? It is the only feature of RadCaptcha that could be causing the encountered behavior. Still, it is strange because usually the captcha control requires an installed Quicktime add-on and the Windows Media Player plug-in should not be necessary.

Please check if the popup displays when the page is opened on another machine. It is possible that the plug-ins in your IE installation are corrupted. There could be other elements on the page that are triggering the popup, remove the captcha to verify if this is the case. You can also open a support ticket and send a simple, runnable page that isolates your setup so that I can inspect the problem locally and provide a more to the point answer. A live URL to your page could also be useful for determining why the Media Player add-on is needed.

All the best,
Slav
the Telerik team