Hi Ramesh,
Thanks for contacting Syncfusion support.
The Audio Captcha compatible browser versions are as
follows:
Internet Explorer – 7,8,9 and 10
Mozilla Firefox – 3.5 and above
Opera – 11, 12
Google Chrome – 10 and above
If you need to work with even lower versions than above
mentioned versions, then we suggest you to install “Apple quick time player”
then the Audio captcha control works fine.
Kindly let us know if you have further queries.
Thanks & Regards
Sunil Prabakar C